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212021112101 = 1021120763991
BaseRepresentation
bin1100010101110101110…
…0010110110100100101
3202021021010010110012112
43011131130112310211
511433204401041401
6241222352130405
721214036501031
oct3053534266445
9667233113175
10212021112101
1181a10432697
1235111536a05
1316cbb966366
14a3948371c1
1557ad9b53bb
hex315d716d25

212021112101 has 4 divisors (see below), whose sum is σ = 212041886304. Its totient is φ = 212000337900.

The previous prime is 212021112071. The next prime is 212021112109. The reversal of 212021112101 is 101211120212.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 212021112101 - 226 = 211954003237 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212021112109) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10371785 + ... + 10392206.

It is an arithmetic number, because the mean of its divisors is an integer number (53010471576).

Almost surely, 2212021112101 is an apocalyptic number.

It is an amenable number.

212021112101 is a deficient number, since it is larger than the sum of its proper divisors (20774203).

212021112101 is a wasteful number, since it uses less digits than its factorization.

212021112101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20774202.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 212021112101 its reverse (101211120212), we get a palindrome (313232232313).

It can be divided in two parts, 2120211 and 12101, that added together give a palindrome (2132312).

The spelling of 212021112101 in words is "two hundred twelve billion, twenty-one million, one hundred twelve thousand, one hundred one".

Divisors: 1 10211 20763991 212021112101