2101012100122 has 32 divisors (see below), whose sum is σ = 3595490110800. Its totient is φ = 912173334528.

The previous prime is 2101012100111. The next prime is 2101012100137. The reversal of 2101012100122 is 2210012101012.

It can be written as a sum of positive squares in 8 ways, for example, as 464375465401 + 1636636634721 = 681451^2 + 1279311^2 .

It is a Harshad number since it is a multiple of its sum of digits (13).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 423247 + ... + 2093122.

Almost surely, 2^{2101012100122} is an apocalyptic number.

2101012100122 is a deficient number, since it is larger than the sum of its proper divisors (1494478010678).

2101012100122 is a wasteful number, since it uses less digits than its factorization.

2101012100122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2518290.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 2101012100122 its reverse (2210012101012), we get a palindrome (4311024201134).

The spelling of 2101012100122 in words is "two trillion, one hundred one billion, twelve million, one hundred thousand, one hundred twenty-two".