2100225291 has 4 divisors (see below), whose sum is σ = 2800300392. Its totient is φ = 1400150192.

The previous prime is 2100225263. The next prime is 2100225299. The reversal of 2100225291 is 1925220012.

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 2100225291 - 2¹⁸ = 2099963147 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2100225299) 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, 350037546 + ... + 350037551.

It is an arithmetic number, because the mean of its divisors is an integer number (700075098).

Almost surely, 2^2100225291 is an apocalyptic number.

2100225291 is a deficient number, since it is larger than the sum of its proper divisors (700075101).

2100225291 is an equidigital number, since it uses as much as digits as its factorization.

2100225291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 700075100.

The product of its (nonzero) digits is 720, while the sum is 24.

The square root of 2100225291 is about 45828.2150099696. The cubic root of 2100225291 is about 1280.6249574707.

The spelling of 2100225291 in words is "two billion, one hundred million, two hundred twenty-five thousand, two hundred ninety-one".