121022221000 has 32 divisors (see below), whose sum is σ = 283191999480. Its totient is φ = 48408888000.

The previous prime is 121022220997. The next prime is 121022221027. The reversal of 121022221000 is 122220121.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 7942017924 + 113080203076 = 89118^2 + 336274^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60510111 + ... + 60512110.

Almost surely, 2^121022221000 is an apocalyptic number.

121022221000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121022221000 is an abundant number, since it is smaller than the sum of its proper divisors (162169778480).

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

121022221000 is a wasteful number, since it uses less digits than its factorization.

121022221000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121022242 (or 121022228 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 121022221000 its reverse (122220121), we get a palindrome (121144441121).

The spelling of 121022221000 in words is "one hundred twenty-one billion, twenty-two million, two hundred twenty-one thousand".