1012111636 has 12 divisors (see below), whose sum is σ = 1771445620. Its totient is φ = 505984320.

The previous prime is 1012111631. The next prime is 1012111651. The reversal of 1012111636 is 6361112101.

It can be written as a sum of positive squares in 2 ways, for example, as 32421636 + 979690000 = 5694^2 + 31300^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012111631) 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, 25870 + ... + 51898.

Almost surely, 2^1012111636 is an apocalyptic number.

It is an amenable number.

1012111636 is a deficient number, since it is larger than the sum of its proper divisors (759333984).

1012111636 is a wasteful number, since it uses less digits than its factorization.

1012111636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35754 (or 35752 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 22.

The square root of 1012111636 is about 31813.7020165840. The cubic root of 1012111636 is about 1004.0210217129.

Adding to 1012111636 its reverse (6361112101), we get a palindrome (7373223737).

The spelling of 1012111636 in words is "one billion, twelve million, one hundred eleven thousand, six hundred thirty-six".