2120250221 has 4 divisors (see below), whose sum is σ = 2124126912. Its totient is φ = 2116373532.

The previous prime is 2120250191. The next prime is 2120250259. The reversal of 2120250221 is 1220520212.

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 a de Polignac number, because none of the positive numbers 2^k-2120250221 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2120250221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2120250271) 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, 1937525 + ... + 1938618.

It is an arithmetic number, because the mean of its divisors is an integer number (531031728).

Almost surely, 2^2120250221 is an apocalyptic number.

It is an amenable number.

2120250221 is a deficient number, since it is larger than the sum of its proper divisors (3876691).

2120250221 is an equidigital number, since it uses as much as digits as its factorization.

2120250221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3876690.

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 2120250221 is about 46046.1748791363. The cubic root of 2120250221 is about 1284.6821968905.

Adding to 2120250221 its reverse (1220520212), we get a palindrome (3340770433).

The spelling of 2120250221 in words is "two billion, one hundred twenty million, two hundred fifty thousand, two hundred twenty-one".