1020111020112 has 40 divisors (see below), whose sum is σ = 2641053350656. Its totient is φ = 339292935936.

The previous prime is 1020111020101. The next prime is 1020111020119. The reversal of 1020111020112 is 2110201110201.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020111020119) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23230048 + ... + 23273919.

Almost surely, 2^{1020111020112} is an apocalyptic number.

1020111020112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1020111020112 is an abundant number, since it is smaller than the sum of its proper divisors (1620942330544).

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

1020111020112 is a wasteful number, since it uses less digits than its factorization.

1020111020112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46504435 (or 46504429 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 1020111020112 its reverse (2110201110201), we get a palindrome (3130312130313).

The spelling of 1020111020112 in words is "one trillion, twenty billion, one hundred eleven million, twenty thousand, one hundred twelve".