121022020220 has 48 divisors (see below), whose sum is σ = 257137221600. Its totient is φ = 47839672320.

The previous prime is 121022020199. The next prime is 121022020237. The reversal of 121022020220 is 22020220121.

It is a junction number, because it is equal to n+sod(n) for n = 121022020195 and 121022020204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3562676 + ... + 3596484.

It is an arithmetic number, because the mean of its divisors is an integer number (5357025450).

Almost surely, 2^121022020220 is an apocalyptic number.

121022020220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121022020220 is an abundant number, since it is smaller than the sum of its proper divisors (136115201380).

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

121022020220 is a wasteful number, since it uses less digits than its factorization.

121022020220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35918 (or 35916 counting only the distinct ones).

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

Adding to 121022020220 its reverse (22020220121), we get a palindrome (143042240341).

The spelling of 121022020220 in words is "one hundred twenty-one billion, twenty-two million, twenty thousand, two hundred twenty".