2100122331021 has 120 divisors (see below), whose sum is σ = 3637061981280. Its totient is φ = 1160659684800.

The previous prime is 2100122331007. The next prime is 2100122331029. The reversal of 2100122331021 is 1201332210012.

2100122331021 is a `hidden beast` number, since 210 + 0 + 122 + 3 + 310 + 21 = 666.

It is not a de Polignac number, because 2100122331021 - 2¹⁴ = 2100122314637 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2100122330985 and 2100122331003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2100122331029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 142171366 + ... + 142186136.

It is an arithmetic number, because the mean of its divisors is an integer number (30308849844).

Almost surely, 2^{2100122331021} is an apocalyptic number.

It is an amenable number.

2100122331021 is a deficient number, since it is larger than the sum of its proper divisors (1536939650259).

2100122331021 is a wasteful number, since it uses less digits than its factorization.

2100122331021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14917 (or 14881 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 2100122331021 its reverse (1201332210012), we get a palindrome (3301454541033).

The spelling of 2100122331021 in words is "two trillion, one hundred billion, one hundred twenty-two million, three hundred thirty-one thousand, twenty-one".