2101210012122 has 48 divisors (see below), whose sum is σ = 4790052142560. Its totient is φ = 612498459456.

The previous prime is 2101210012091. The next prime is 2101210012159. The reversal of 2101210012122 is 2212100121012.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 54512293 + ... + 54550824.

It is an arithmetic number, because the mean of its divisors is an integer number (99792752970).

Almost surely, 2^{2101210012122} is an apocalyptic number.

2101210012122 is an abundant number, since it is smaller than the sum of its proper divisors (2688842130438).

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

2101210012122 is a wasteful number, since it uses less digits than its factorization.

2101210012122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109063167 (or 109063154 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 2101210012122 its reverse (2212100121012), we get a palindrome (4313310133134).

The spelling of 2101210012122 in words is "two trillion, one hundred one billion, two hundred ten million, twelve thousand, one hundred twenty-two".