102012331111 has 4 divisors (see below), whose sum is σ = 102095201824. Its totient is φ = 101929460400.

The previous prime is 102012331087. The next prime is 102012331123. The reversal of 102012331111 is 111133210201.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 102012331111 - 2¹⁵ = 102012298343 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 (102012331151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41433510 + ... + 41435971.

It is an arithmetic number, because the mean of its divisors is an integer number (25523800456).

Almost surely, 2^102012331111 is an apocalyptic number.

102012331111 is a deficient number, since it is larger than the sum of its proper divisors (82870713).

102012331111 is an equidigital number, since it uses as much as digits as its factorization.

102012331111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82870712.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 102012331111 its reverse (111133210201), we get a palindrome (213145541312).

The spelling of 102012331111 in words is "one hundred two billion, twelve million, three hundred thirty-one thousand, one hundred eleven".