210012122012121 has 144 divisors (see below), whose sum is σ = 365241774748032. Its totient is φ = 115482237995520.

The previous prime is 210012122012117. The next prime is 210012122012149. The reversal of 210012122012121 is 121210221210012.

210012122012121 is a `hidden beast` number, since 210 + 0 + 1 + 21 + 220 + 1 + 212 + 1 = 666.

It is not a de Polignac number, because 210012122012121 - 2² = 210012122012117 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 210012122012094 and 210012122012103.

It is not an unprimeable number, because it can be changed into a prime (210012122011121) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 433230940 + ... + 433715426.

It is an arithmetic number, because the mean of its divisors is an integer number (2536401213528).

Almost surely, 2^{210012122012121} is an apocalyptic number.

It is an amenable number.

210012122012121 is a deficient number, since it is larger than the sum of its proper divisors (155229652735911).

210012122012121 is a wasteful number, since it uses less digits than its factorization.

210012122012121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 485052 (or 485038 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 210012122012121 its reverse (121210221210012), we get a palindrome (331222343222133).

The spelling of 210012122012121 in words is "two hundred ten trillion, twelve billion, one hundred twenty-two million, twelve thousand, one hundred twenty-one".