121022022220 has 48 divisors (see below), whose sum is σ = 286810826400. Its totient is φ = 42490488320.

The previous prime is 121022022137. The next prime is 121022022229. The reversal of 121022022220 is 22220220121.

It is a junction number, because it is equal to n+sod(n) for n = 121022022194 and 121022022203.

It is not an unprimeable number, because it can be changed into a prime (121022022229) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 9478105 + ... + 9490864.

It is an arithmetic number, because the mean of its divisors is an integer number (5975225550).

Almost surely, 2^121022022220 is an apocalyptic number.

121022022220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121022022220 is an abundant number, since it is smaller than the sum of its proper divisors (165788804180).

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

121022022220 is a wasteful number, since it uses less digits than its factorization.

121022022220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18969018 (or 18969016 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 121022022220 its reverse (22220220121), we get a palindrome (143242242341).

The spelling of 121022022220 in words is "one hundred twenty-one billion, twenty-two million, twenty-two thousand, two hundred twenty".