2290122021 has 32 divisors (see below), whose sum is σ = 3368825856. Its totient is φ = 1372320000.

The previous prime is 2290122017. The next prime is 2290122059. The reversal of 2290122021 is 1202210922.

It is a happy number.

It is not a de Polignac number, because 2290122021 - 2² = 2290122017 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2290122061) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1199950 + ... + 1201856.

It is an arithmetic number, because the mean of its divisors is an integer number (105275808).

Almost surely, 2^2290122021 is an apocalyptic number.

It is an amenable number.

2290122021 is a deficient number, since it is larger than the sum of its proper divisors (1078703835).

2290122021 is a wasteful number, since it uses less digits than its factorization.

2290122021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2313.

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 2290122021 is about 47855.2193705138. The cubic root of 2290122021 is about 1318.1137009374.

Adding to 2290122021 its reverse (1202210922), we get a palindrome (3492332943).

The spelling of 2290122021 in words is "two billion, two hundred ninety million, one hundred twenty-two thousand, twenty-one".