1021110111112 has 64 divisors (see below), whose sum is σ = 2356778551680. Its totient is φ = 403892116992.

The previous prime is 1021110111107. The next prime is 1021110111173. The reversal of 1021110111112 is 2111110111201.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a junction number, because it is equal to n+sod(n) for n = 1021110111092 and 1021110111101.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4663563 + ... + 4877605.

It is an arithmetic number, because the mean of its divisors is an integer number (36824664870).

Almost surely, 2^{1021110111112} is an apocalyptic number.

It is an amenable number.

1021110111112 is an abundant number, since it is smaller than the sum of its proper divisors (1335668440568).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1021110111112 is a wasteful number, since it uses less digits than its factorization.

1021110111112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220622 (or 220618 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 13.

Adding to 1021110111112 its reverse (2111110111201), we get a palindrome (3132220222313).

The spelling of 1021110111112 in words is "one trillion, twenty-one billion, one hundred ten million, one hundred eleven thousand, one hundred twelve".