1020111112 has 16 divisors (see below), whose sum is σ = 2025220860. Its totient is φ = 480052224.

The previous prime is 1020111107. The next prime is 1020111149. The reversal of 1020111112 is 2111110201.

It can be written as a sum of positive squares in 2 ways, for example, as 999444996 + 20666116 = 31614^2 + 4546^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3750273 + ... + 3750544.

Almost surely, 2^1020111112 is an apocalyptic number.

It is an amenable number.

1020111112 is a deficient number, since it is larger than the sum of its proper divisors (1005109748).

1020111112 is a wasteful number, since it uses less digits than its factorization.

1020111112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7500840 (or 7500836 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 10.

The square root of 1020111112 is about 31939.1783238079. The cubic root of 1020111112 is about 1006.6592598220.

Adding to 1020111112 its reverse (2111110201), we get a palindrome (3131221313).

The spelling of 1020111112 in words is "one billion, twenty million, one hundred eleven thousand, one hundred twelve".