2100122200257 has 4 divisors (see below), whose sum is σ = 2800162933680. Its totient is φ = 1400081466836.

The previous prime is 2100122200193. The next prime is 2100122200259. The reversal of 2100122200257 is 7520022210012.

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 2100122200257 - 2⁶ = 2100122200193 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2100122200259) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 350020366707 + ... + 350020366712.

It is an arithmetic number, because the mean of its divisors is an integer number (700040733420).

Almost surely, 2^{2100122200257} is an apocalyptic number.

It is an amenable number.

2100122200257 is a deficient number, since it is larger than the sum of its proper divisors (700040733423).

2100122200257 is an equidigital number, since it uses as much as digits as its factorization.

2100122200257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 700040733422.

The product of its (nonzero) digits is 1120, while the sum is 24.

Adding to 2100122200257 its reverse (7520022210012), we get a palindrome (9620144410269).

The spelling of 2100122200257 in words is "two trillion, one hundred billion, one hundred twenty-two million, two hundred thousand, two hundred fifty-seven".