1012020021112 has 16 divisors (see below), whose sum is σ = 1897570470600. Its totient is φ = 506001228960.

The previous prime is 1012020021091. The next prime is 1012020021113. The reversal of 1012020021112 is 2111200202101.

It is a junction number, because it is equal to n+sod(n) for n = 1012020021092 and 1012020021101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012020021113) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 594339 + ... + 1541842.

Almost surely, 2^{1012020021112} is an apocalyptic number.

It is an amenable number.

1012020021112 is a deficient number, since it is larger than the sum of its proper divisors (885550449488).

1012020021112 is a wasteful number, since it uses less digits than its factorization.

1012020021112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2195406 (or 2195402 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1012020021112 its reverse (2111200202101), we get a palindrome (3123220223213).

The spelling of 1012020021112 in words is "one trillion, twelve billion, twenty million, twenty-one thousand, one hundred twelve".