2100022011021 has 32 divisors (see below), whose sum is σ = 3195334241280. Its totient is φ = 1214367968000.

The previous prime is 2100022010953. The next prime is 2100022011029. The reversal of 2100022011021 is 1201102200012.

It is not a de Polignac number, because 2100022011021 - 2¹³ = 2100022002829 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2100022010988 and 2100022011006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2100022011029) 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, 3145551 + ... + 3754268.

It is an arithmetic number, because the mean of its divisors is an integer number (99854195040).

Almost surely, 2^{2100022011021} is an apocalyptic number.

It is an amenable number.

2100022011021 is a deficient number, since it is larger than the sum of its proper divisors (1095312230259).

2100022011021 is a wasteful number, since it uses less digits than its factorization.

2100022011021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6900257.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 2100022011021 its reverse (1201102200012), we get a palindrome (3301124211033).

The spelling of 2100022011021 in words is "two trillion, one hundred billion, twenty-two million, eleven thousand, twenty-one".