210121313100012 has 72 divisors (see below), whose sum is σ = 574939511790000. Its totient is φ = 66354098861376.

The previous prime is 210121313100007. The next prime is 210121313100059. The reversal of 210121313100012 is 210001313121012.

210121313100012 is a `hidden beast` number, since 210 + 1 + 2 + 131 + 310 + 0 + 0 + 12 = 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 23 ways as a sum of consecutive naturals, for example, 2694653137 + ... + 2694731112.

Almost surely, 2^{210121313100012} is an apocalyptic number.

It is an amenable number.

210121313100012 is an abundant number, since it is smaller than the sum of its proper divisors (364818198689988).

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

210121313100012 is a wasteful number, since it uses less digits than its factorization.

210121313100012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5389384300 (or 5389384273 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 210121313100012 its reverse (210001313121012), we get a palindrome (420122626221024).

The spelling of 210121313100012 in words is "two hundred ten trillion, one hundred twenty-one billion, three hundred thirteen million, one hundred thousand, twelve".