Search a number
-
+
212021120123 = 1312459658187
BaseRepresentation
bin1100010101110101110…
…0011000110001111011
3202021021010010212012122
43011131130120301323
511433204401320443
6241222352231455
721214036533311
oct3053534306173
9667233125178
10212021120123
1181a1043871a
123511153b58b
1316cbb969bc7
14a39483a0b1
1557ad9b7968
hex315d718c7b

212021120123 has 8 divisors (see below), whose sum is σ = 213726807360. Its totient is φ = 210316754440.

The previous prime is 212021120093. The next prime is 212021120249. The reversal of 212021120123 is 321021120212.

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

It is a cyclic number.

It is not a de Polignac number, because 212021120123 - 28 = 212021119867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212021120923) 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, 6965 + ... + 651222.

It is an arithmetic number, because the mean of its divisors is an integer number (26715850920).

Almost surely, 2212021120123 is an apocalyptic number.

212021120123 is a deficient number, since it is larger than the sum of its proper divisors (1705687237).

212021120123 is a wasteful number, since it uses less digits than its factorization.

212021120123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 660777.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 212021120123 its reverse (321021120212), we get a palindrome (533042240335).

The spelling of 212021120123 in words is "two hundred twelve billion, twenty-one million, one hundred twenty thousand, one hundred twenty-three".

Divisors: 1 131 2459 322129 658187 86222497 1618481833 212021120123