1212403204100 has 72 divisors (see below), whose sum is σ = 2875983716928. Its totient is φ = 439968412800.

The previous prime is 1212403204099. The next prime is 1212403204151. The reversal of 1212403204100 is 14023042121.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 595907 + ... + 1667306.

Almost surely, 2^{1212403204100} is an apocalyptic number.

1212403204100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1212403204100 is an abundant number, since it is smaller than the sum of its proper divisors (1663580512828).

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

1212403204100 is a wasteful number, since it uses less digits than its factorization.

1212403204100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2263725 (or 2263718 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 1212403204100 its reverse (14023042121), we get a palindrome (1226426246221).

The spelling of 1212403204100 in words is "one trillion, two hundred twelve billion, four hundred three million, two hundred four thousand, one hundred".