2105150222251 has 4 divisors (see below), whose sum is σ = 2107176354400. Its totient is φ = 2103124090104.

The previous prime is 2105150222249. The next prime is 2105150222303. The reversal of 2105150222251 is 1522220515012.

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 2105150222251 - 2¹ = 2105150222249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2105150222551) 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, 1013064516 + ... + 1013066593.

It is an arithmetic number, because the mean of its divisors is an integer number (526794088600).

Almost surely, 2^{2105150222251} is an apocalyptic number.

2105150222251 is a deficient number, since it is larger than the sum of its proper divisors (2026132149).

2105150222251 is a wasteful number, since it uses less digits than its factorization.

2105150222251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2026132148.

The product of its (nonzero) digits is 4000, while the sum is 28.

Adding to 2105150222251 its reverse (1522220515012), we get a palindrome (3627370737263).

The spelling of 2105150222251 in words is "two trillion, one hundred five billion, one hundred fifty million, two hundred twenty-two thousand, two hundred fifty-one".