121221021221202 has 32 divisors (see below), whose sum is σ = 277081776082944. Its totient is φ = 34633932973200.

The previous prime is 121221021221197. The next prime is 121221021221219. The reversal of 121221021221202 is 202122120122121.

It is a super-2 number, since 2×121221021221202² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

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, 24568824 + ... + 29087267.

It is an arithmetic number, because the mean of its divisors is an integer number (8658805502592).

Almost surely, 2^{121221021221202} is an apocalyptic number.

121221021221202 is an abundant number, since it is smaller than the sum of its proper divisors (155860754861742).

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

121221021221202 is a wasteful number, since it uses less digits than its factorization.

121221021221202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53709894.

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

Adding to 121221021221202 its reverse (202122120122121), we get a palindrome (323343141343323).

The spelling of 121221021221202 in words is "one hundred twenty-one trillion, two hundred twenty-one billion, twenty-one million, two hundred twenty-one thousand, two hundred two".