121221221000202 has 48 divisors (see below), whose sum is σ = 274101923160000. Its totient is φ = 38645089334016.

The previous prime is 121221221000183. The next prime is 121221221000291. The reversal of 121221221000202 is 202000122122121.

It is a happy number.

121221221000202 is a `hidden beast` number, since 1 + 21 + 221 + 221 + 0 + 0 + 0 + 202 = 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, 16418343 + ... + 22627514.

It is an arithmetic number, because the mean of its divisors is an integer number (5710456732500).

Almost surely, 2^{121221221000202} is an apocalyptic number.

121221221000202 is an abundant number, since it is smaller than the sum of its proper divisors (152880702159798).

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

121221221000202 is a wasteful number, since it uses less digits than its factorization.

121221221000202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39053387 (or 39053384 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 121221221000202 its reverse (202000122122121), we get a palindrome (323221343122323).

The spelling of 121221221000202 in words is "one hundred twenty-one trillion, two hundred twenty-one billion, two hundred twenty-one million, two hundred two", and thus it is an aban number.