121210122100212 has 72 divisors (see below), whose sum is σ = 308602170676800. Its totient is φ = 40111966988928.

The previous prime is 121210122100159. The next prime is 121210122100259. The reversal of 121210122100212 is 212001221012121.

121210122100212 is a `hidden beast` number, since 1 + 21 + 210 + 1 + 221 + 0 + 0 + 212 = 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, 318509593 + ... + 318889919.

It is an arithmetic number, because the mean of its divisors is an integer number (4286141259400).

Almost surely, 2^{121210122100212} is an apocalyptic number.

121210122100212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

121210122100212 is an abundant number, since it is smaller than the sum of its proper divisors (187392048576588).

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

121210122100212 is a wasteful number, since it uses less digits than its factorization.

121210122100212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 444165 (or 444160 counting only the distinct ones).

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

Adding to 121210122100212 its reverse (212001221012121), we get a palindrome (333211343112333).

The spelling of 121210122100212 in words is "one hundred twenty-one trillion, two hundred ten billion, one hundred twenty-two million, one hundred thousand, two hundred twelve".