2100326465221 has 4 divisors (see below), whose sum is σ = 2107748113792. Its totient is φ = 2092904816652.

The previous prime is 2100326465203. The next prime is 2100326465257. The reversal of 2100326465221 is 1225646230012.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2100326465221 - 2²³ = 2100318076613 is a prime.

It is a super-2 number, since 2×2100326465221² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2100326465521) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3710823861 + ... + 3710824426.

It is an arithmetic number, because the mean of its divisors is an integer number (526937028448).

Almost surely, 2^{2100326465221} is an apocalyptic number.

It is an amenable number.

2100326465221 is a deficient number, since it is larger than the sum of its proper divisors (7421648571).

2100326465221 is an equidigital number, since it uses as much as digits as its factorization.

2100326465221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7421648570.

The product of its (nonzero) digits is 34560, while the sum is 34.

The spelling of 2100326465221 in words is "two trillion, one hundred billion, three hundred twenty-six million, four hundred sixty-five thousand, two hundred twenty-one".