1212133100 has 18 divisors (see below), whose sum is σ = 2630329044. Its totient is φ = 484853200.

The previous prime is 1212133067. The next prime is 1212133123. The reversal of 1212133100 is 13312121.

It is a super-2 number, since 2×1212133100² = 2938533304231220000, 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, 6060566 + ... + 6060765.

Almost surely, 2^1212133100 is an apocalyptic number.

1212133100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1212133100 is an abundant number, since it is smaller than the sum of its proper divisors (1418195944).

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

1212133100 is a wasteful number, since it uses less digits than its factorization.

1212133100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12121345 (or 12121338 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 1212133100 is about 34815.7019173820. The cubic root of 1212133100 is about 1066.2280499158.

Adding to 1212133100 its reverse (13312121), we get a palindrome (1225445221).

The spelling of 1212133100 in words is "one billion, two hundred twelve million, one hundred thirty-three thousand, one hundred".