1210916900 has 18 divisors (see below), whose sum is σ = 2627689890. Its totient is φ = 484366720.

The previous prime is 1210916899. The next prime is 1210916939. The reversal of 1210916900 is 96190121.

It can be written as a sum of positive squares in 3 ways, for example, as 3771364 + 1207145536 = 1942^2 + 34744^2 .

It is a super-2 number, since 2×1210916900² = 2932639477411220000, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6054485 + ... + 6054684.

Almost surely, 2^1210916900 is an apocalyptic number.

1210916900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1210916900 is an abundant number, since it is smaller than the sum of its proper divisors (1416772990).

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

1210916900 is a wasteful number, since it uses less digits than its factorization.

1210916900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12109183 (or 12109176 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 29.

The square root of 1210916900 is about 34798.2312768911. The cubic root of 1210916900 is about 1065.8713287782.

The spelling of 1210916900 in words is "one billion, two hundred ten million, nine hundred sixteen thousand, nine hundred".