212404020102 has 48 divisors (see below), whose sum is σ = 466004382480. Its totient is φ = 69912999936.

The previous prime is 212404020097. The next prime is 212404020119. The reversal of 212404020102 is 201020404212.

212404020102 is a `hidden beast` number, since 21 + 240 + 402 + 0 + 1 + 0 + 2 = 666.

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

It is a congruent number.

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, 636174 + ... + 910782.

It is an arithmetic number, because the mean of its divisors is an integer number (9708424635).

Almost surely, 2^212404020102 is an apocalyptic number.

212404020102 is an abundant number, since it is smaller than the sum of its proper divisors (253600362378).

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

212404020102 is a wasteful number, since it uses less digits than its factorization.

212404020102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275157 (or 275154 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 212404020102 its reverse (201020404212), we get a palindrome (413424424314).

The spelling of 212404020102 in words is "two hundred twelve billion, four hundred four million, twenty thousand, one hundred two".