2100520110051 has 24 divisors (see below), whose sum is σ = 3420498011280. Its totient is φ = 1273042488960.

The previous prime is 2100520110023. The next prime is 2100520110097. The reversal of 2100520110051 is 1500110250012.

It is not a de Polignac number, because 2100520110051 - 2³¹ = 2098372626403 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2100520111051) 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 23 ways as a sum of consecutive naturals, for example, 321472110 + ... + 321478643.

It is an arithmetic number, because the mean of its divisors is an integer number (142520750470).

Almost surely, 2^{2100520110051} is an apocalyptic number.

2100520110051 is a deficient number, since it is larger than the sum of its proper divisors (1319977901229).

2100520110051 is a wasteful number, since it uses less digits than its factorization.

2100520110051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 642950784 (or 642950767 counting only the distinct ones).

The product of its (nonzero) digits is 100, while the sum is 18.

Adding to 2100520110051 its reverse (1500110250012), we get a palindrome (3600630360063).

The spelling of 2100520110051 in words is "two trillion, one hundred billion, five hundred twenty million, one hundred ten thousand, fifty-one".