1212130232100 has 144 divisors (see below), whose sum is σ = 3943724043840. Its totient is φ = 319340275200.

The previous prime is 1212130232081. The next prime is 1212130232129. The reversal of 1212130232100 is 12320312121.

1212130232100 is a `hidden beast` number, since 1 + 21 + 21 + 302 + 321 + 0 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2480341 + ... + 2928540.

Almost surely, 2^{1212130232100} is an apocalyptic number.

1212130232100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1212130232100 is an abundant number, since it is smaller than the sum of its proper divisors (2731593811740).

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

1212130232100 is a wasteful number, since it uses less digits than its factorization.

1212130232100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5408987 (or 5408974 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 1212130232100 its reverse (12320312121), we get a palindrome (1224450544221).

The spelling of 1212130232100 in words is "one trillion, two hundred twelve billion, one hundred thirty million, two hundred thirty-two thousand, one hundred".