121010022220 has 24 divisors (see below), whose sum is σ = 254127586608. Its totient is φ = 48402763200.

The previous prime is 121010022197. The next prime is 121010022247. The reversal of 121010022220 is 22220010121.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 121010022220.

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 7 ways as a sum of consecutive naturals, for example, 1450030 + ... + 1531210.

It is an arithmetic number, because the mean of its divisors is an integer number (10588649442).

Almost surely, 2^121010022220 is an apocalyptic number.

121010022220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121010022220 is an abundant number, since it is smaller than the sum of its proper divisors (133117564388).

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

121010022220 is a wasteful number, since it uses less digits than its factorization.

121010022220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155721 (or 155719 counting only the distinct ones).

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

Adding to 121010022220 its reverse (22220010121), we get a palindrome (143230032341).

The spelling of 121010022220 in words is "one hundred twenty-one billion, ten million, twenty-two thousand, two hundred twenty".