121221202102212 has 48 divisors (see below), whose sum is σ = 284058418629440. Its totient is φ = 40234708499328.

The previous prime is 121221202102093. The next prime is 121221202102223. The reversal of 121221202102212 is 212201202122121.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18952483 + ... + 24528330.

Almost surely, 2^{121221202102212} is an apocalyptic number.

121221202102212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

121221202102212 is an abundant number, since it is smaller than the sum of its proper divisors (162837216527228).

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

121221202102212 is a wasteful number, since it uses less digits than its factorization.

121221202102212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43481812 (or 43481810 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 121221202102212 its reverse (212201202122121), we get a palindrome (333422404224333).

The spelling of 121221202102212 in words is "one hundred twenty-one trillion, two hundred twenty-one billion, two hundred two million, one hundred two thousand, two hundred twelve".