102012121323 has 72 divisors (see below), whose sum is σ = 191043375120. Its totient is φ = 51976028160.

The previous prime is 102012121307. The next prime is 102012121339. The reversal of 102012121323 is 323121210201.

It is an interprime number because it is at equal distance from previous prime (102012121307) and next prime (102012121339).

It is not a de Polignac number, because 102012121323 - 2⁴ = 102012121307 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 102012121296 and 102012121305.

It is not an unprimeable number, because it can be changed into a prime (102012121363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 215638 + ... + 500523.

It is an arithmetic number, because the mean of its divisors is an integer number (2653380210).

Almost surely, 2^102012121323 is an apocalyptic number.

102012121323 is a deficient number, since it is larger than the sum of its proper divisors (89031253797).

102012121323 is a wasteful number, since it uses less digits than its factorization.

102012121323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 716217 (or 716207 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 102012121323 its reverse (323121210201), we get a palindrome (425133331524).

The spelling of 102012121323 in words is "one hundred two billion, twelve million, one hundred twenty-one thousand, three hundred twenty-three".