102021111112 has 32 divisors (see below), whose sum is σ = 192022876800. Its totient is φ = 50815310464.

The previous prime is 102021111029. The next prime is 102021111139. The reversal of 102021111112 is 211111120201.

It is a happy number.

It is a super-2 number, since 2×102021111112² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 102021111092 and 102021111101.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 2805108 + ... + 2841244.

It is an arithmetic number, because the mean of its divisors is an integer number (6000714900).

Almost surely, 2^102021111112 is an apocalyptic number.

It is an amenable number.

102021111112 is a deficient number, since it is larger than the sum of its proper divisors (90001765688).

102021111112 is a wasteful number, since it uses less digits than its factorization.

102021111112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37485 (or 37481 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 102021111112 its reverse (211111120201), we get a palindrome (313132231313).

The spelling of 102021111112 in words is "one hundred two billion, twenty-one million, one hundred eleven thousand, one hundred twelve".