121210120220 has 48 divisors (see below), whose sum is σ = 292208867328. Its totient is φ = 41371387200.

The previous prime is 121210120219. The next prime is 121210120231. The reversal of 121210120220 is 22021012121.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 121210120195 and 121210120204.

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, 1910006 + ... + 1972445.

It is an arithmetic number, because the mean of its divisors is an integer number (6087684736).

Almost surely, 2^121210120220 is an apocalyptic number.

121210120220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121210120220 is an abundant number, since it is smaller than the sum of its proper divisors (170998747108).

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

121210120220 is a wasteful number, since it uses less digits than its factorization.

121210120220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3882690 (or 3882688 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 121210120220 its reverse (22021012121), we get a palindrome (143231132341).

It can be divided in two parts, 1212101 and 20220, that added together give a palindrome (1232321).

The spelling of 121210120220 in words is "one hundred twenty-one billion, two hundred ten million, one hundred twenty thousand, two hundred twenty".