121112022220 has 24 divisors (see below), whose sum is σ = 290668853664. Its totient is φ = 41524121856.

The previous prime is 121112022137. The next prime is 121112022223. The reversal of 121112022220 is 22220211121.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 121112022194 and 121112022203.

It is not an unprimeable number, because it can be changed into a prime (121112022223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 432542797 + ... + 432543076.

It is an arithmetic number, because the mean of its divisors is an integer number (12111202236).

Almost surely, 2^121112022220 is an apocalyptic number.

121112022220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121112022220 is an abundant number, since it is smaller than the sum of its proper divisors (169556831444).

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

121112022220 is a wasteful number, since it uses less digits than its factorization.

121112022220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 865085889 (or 865085887 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 121112022220 its reverse (22220211121), we get a palindrome (143332233341).

The spelling of 121112022220 in words is "one hundred twenty-one billion, one hundred twelve million, twenty-two thousand, two hundred twenty".