2101222112120 has 32 divisors (see below), whose sum is σ = 4976578688400. Its totient is φ = 796252589568.

The previous prime is 2101222112107. The next prime is 2101222112123. The reversal of 2101222112120 is 212112221012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2101222112123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1382382209 + ... + 1382383728.

Almost surely, 2^{2101222112120} is an apocalyptic number.

2101222112120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2101222112120 is an abundant number, since it is smaller than the sum of its proper divisors (2875356576280).

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

2101222112120 is a wasteful number, since it uses less digits than its factorization.

2101222112120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2764765967 (or 2764765963 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 2101222112120 its reverse (212112221012), we get a palindrome (2313334333132).

The spelling of 2101222112120 in words is "two trillion, one hundred one billion, two hundred twenty-two million, one hundred twelve thousand, one hundred twenty".