1021111211112 has 32 divisors (see below), whose sum is σ = 2552809754880. Its totient is φ = 340366173440.

The previous prime is 1021111211101. The next prime is 1021111211123. The reversal of 1021111211112 is 2111121111201.

It is an interprime number because it is at equal distance from previous prime (1021111211101) and next prime (1021111211123).

It is a junction number, because it is equal to n+sod(n) for n = 1021111211091 and 1021111211100.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2160937 + ... + 2590727.

It is an arithmetic number, because the mean of its divisors is an integer number (79775304840).

Almost surely, 2^{1021111211112} is an apocalyptic number.

1021111211112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1021111211112 is an abundant number, since it is smaller than the sum of its proper divisors (1531698543768).

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

1021111211112 is a wasteful number, since it uses less digits than its factorization.

1021111211112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 528793 (or 528789 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 15.

Adding to 1021111211112 its reverse (2111121111201), we get a palindrome (3132232322313).

The spelling of 1021111211112 in words is "one trillion, twenty-one billion, one hundred eleven million, two hundred eleven thousand, one hundred twelve".