121020202220 has 12 divisors (see below), whose sum is σ = 254142424704. Its totient is φ = 48408080880.

The previous prime is 121020202187. The next prime is 121020202223. The reversal of 121020202220 is 22202020121.

It is a junction number, because it is equal to n+sod(n) for n = 121020202195 and 121020202204.

It is not an unprimeable number, because it can be changed into a prime (121020202223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3025505036 + ... + 3025505075.

It is an arithmetic number, because the mean of its divisors is an integer number (21178535392).

Almost surely, 2^121020202220 is an apocalyptic number.

121020202220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121020202220 is an abundant number, since it is smaller than the sum of its proper divisors (133122222484).

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

121020202220 is a wasteful number, since it uses less digits than its factorization.

121020202220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6051010120 (or 6051010118 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 121020202220 its reverse (22202020121), we get a palindrome (143222222341).

The spelling of 121020202220 in words is "one hundred twenty-one billion, twenty million, two hundred two thousand, two hundred twenty".