2100552013231 has 4 divisors (see below), whose sum is σ = 2400630872272. Its totient is φ = 1800473154192.

The previous prime is 2100552013213. The next prime is 2100552013297. The reversal of 2100552013231 is 1323102550012.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2100552013231 - 2¹⁷ = 2100551882159 is a prime.

It is a super-2 number, since 2×2100552013231² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2100552013196 and 2100552013205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2100552013031) 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, 150039429510 + ... + 150039429523.

It is an arithmetic number, because the mean of its divisors is an integer number (600157718068).

Almost surely, 2^{2100552013231} is an apocalyptic number.

2100552013231 is a deficient number, since it is larger than the sum of its proper divisors (300078859041).

2100552013231 is an equidigital number, since it uses as much as digits as its factorization.

2100552013231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300078859040.

The product of its (nonzero) digits is 1800, while the sum is 25.

Adding to 2100552013231 its reverse (1323102550012), we get a palindrome (3423654563243).

The spelling of 2100552013231 in words is "two trillion, one hundred billion, five hundred fifty-two million, thirteen thousand, two hundred thirty-one".