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312021110000121 = 3791316544767933
BaseRepresentation
bin100011011110010000001001…
…1011011001000100111111001
31111220202221000122012210210220
41012330200103123020213321
5311344123213130000441
63023340304042530253
7122502531656522334
oct10674402333104771
91456687018183726
10312021110000121
1190468456248915
122abb3946506989
1310514606441922
145709c8bcbd61b
1526115b9ba9466
hex11bc8136c89f9

312021110000121 has 8 divisors (see below), whose sum is σ = 421294325738880. Its totient is φ = 205380983797392.

The previous prime is 312021110000101. The next prime is 312021110000129. The reversal of 312021110000121 is 121000011120213.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 312021110000121 - 239 = 311471354186233 is a prime.

It is a super-4 number, since 4×3120211100001214 (a number of 59 digits) contains 4444 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 312021110000121.

It is not an unprimeable number, because it can be changed into a prime (312021110000129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 658272383730 + ... + 658272384203.

It is an arithmetic number, because the mean of its divisors is an integer number (52661790717360).

Almost surely, 2312021110000121 is an apocalyptic number.

It is an amenable number.

312021110000121 is a deficient number, since it is larger than the sum of its proper divisors (109273215738759).

312021110000121 is a wasteful number, since it uses less digits than its factorization.

312021110000121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1316544768015.

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 312021110000121 its reverse (121000011120213), we get a palindrome (433021121120334).

The spelling of 312021110000121 in words is "three hundred twelve trillion, twenty-one billion, one hundred ten million, one hundred twenty-one", and thus it is an aban number.

Divisors: 1 3 79 237 1316544767933 3949634303799 104007036666707 312021110000121