2101312122 has 64 divisors (see below), whose sum is σ = 5339357184. Its totient is φ = 536310720.

The previous prime is 2101312111. The next prime is 2101312127. The reversal of 2101312122 is 2212131012.

It is not an unprimeable number, because it can be changed into a prime (2101312127) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 45148 + ... + 78999.

It is an arithmetic number, because the mean of its divisors is an integer number (83427456).

Almost surely, 2^2101312122 is an apocalyptic number.

2101312122 is an abundant number, since it is smaller than the sum of its proper divisors (3238045062).

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

2101312122 is a wasteful number, since it uses less digits than its factorization.

2101312122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124203.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 2101312122 is about 45840.0711386883. The cubic root of 2101312122 is about 1280.8458199494.

Adding to 2101312122 its reverse (2212131012), we get a palindrome (4313443134).

The spelling of 2101312122 in words is "two billion, one hundred one million, three hundred twelve thousand, one hundred twenty-two".