120121210220 has 48 divisors (see below), whose sum is σ = 276875117568. Its totient is φ = 43412448960.

The previous prime is 120121210217. The next prime is 120121210241. The reversal of 120121210220 is 22012121021.

It is a junction number, because it is equal to n+sod(n) for n = 120121210195 and 120121210204.

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, 1639004 + ... + 1710723.

It is an arithmetic number, because the mean of its divisors is an integer number (5768231616).

Almost surely, 2^120121210220 is an apocalyptic number.

120121210220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120121210220 is an abundant number, since it is smaller than the sum of its proper divisors (156753907348).

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

120121210220 is a wasteful number, since it uses less digits than its factorization.

120121210220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3349910 (or 3349908 counting only the distinct ones).

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

Adding to 120121210220 its reverse (22012121021), we get a palindrome (142133331241).

The spelling of 120121210220 in words is "one hundred twenty billion, one hundred twenty-one million, two hundred ten thousand, two hundred twenty".