121021223202 has 64 divisors (see below), whose sum is σ = 293440965120. Its totient is φ = 36666075600.

The previous prime is 121021223189. The next prime is 121021223243. The reversal of 121021223202 is 202322120121.

It is a super-2 number, since 2×121021223202² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3672933 + ... + 3705735.

It is an arithmetic number, because the mean of its divisors is an integer number (4585015080).

Almost surely, 2^121021223202 is an apocalyptic number.

121021223202 is an abundant number, since it is smaller than the sum of its proper divisors (172419741918).

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

121021223202 is a wasteful number, since it uses less digits than its factorization.

121021223202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39036 (or 39030 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 121021223202 its reverse (202322120121), we get a palindrome (323343343323).

The spelling of 121021223202 in words is "one hundred twenty-one billion, twenty-one million, two hundred twenty-three thousand, two hundred two".