12122111220220 has 48 divisors (see below), whose sum is σ = 26452332668160. Its totient is φ = 4660648989696.

The previous prime is 12122111220217. The next prime is 12122111220251. The reversal of 12122111220220 is 2202211122121.

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, 46732077 + ... + 46990756.

It is an arithmetic number, because the mean of its divisors is an integer number (551090263920).

Almost surely, 2^{12122111220220} is an apocalyptic number.

12122111220220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12122111220220 is an abundant number, since it is smaller than the sum of its proper divisors (14330221447940).

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

12122111220220 is a wasteful number, since it uses less digits than its factorization.

12122111220220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93723094 (or 93723092 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 12122111220220 its reverse (2202211122121), we get a palindrome (14324322342341).

The spelling of 12122111220220 in words is "twelve trillion, one hundred twenty-two billion, one hundred eleven million, two hundred twenty thousand, two hundred twenty".