1021020111112 has 192 divisors, whose sum is σ = 2163824409600. Its totient is φ = 449953658880.

The previous prime is 1021020111101. The next prime is 1021020111151. The reversal of 1021020111112 is 2111110201201.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1021020111092 and 1021020111101.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 920666814 + ... + 920667922.

It is an arithmetic number, because the mean of its divisors is an integer number (11269918800).

Almost surely, 2^{1021020111112} is an apocalyptic number.

It is an amenable number.

1021020111112 is an abundant number, since it is smaller than the sum of its proper divisors (1142804298488).

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

1021020111112 is a wasteful number, since it uses less digits than its factorization.

1021020111112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1436 (or 1409 counting only the distinct ones).

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

Adding to 1021020111112 its reverse (2111110201201), we get a palindrome (3132130312313).

The spelling of 1021020111112 in words is "one trillion, twenty-one billion, twenty million, one hundred eleven thousand, one hundred twelve".