252022121 has 8 divisors (see below), whose sum is σ = 278028744. Its totient is φ = 226961280.

The previous prime is 252022103. The next prime is 252022139. The reversal of 252022121 is 121220252.

252022121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (252022103) and next prime (252022139).

It can be written as a sum of positive squares in 4 ways, for example, as 1243225 + 250778896 = 1115^2 + 15836^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-252022121 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 252022121.

It is not an unprimeable number, because it can be changed into a prime (252022321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 235886 + ... + 236951.

It is an arithmetic number, because the mean of its divisors is an integer number (34753593).

Almost surely, 2^252022121 is an apocalyptic number.

It is an amenable number.

252022121 is a deficient number, since it is larger than the sum of its proper divisors (26006623).

252022121 is a wasteful number, since it uses less digits than its factorization.

252022121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 472891.

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

The square root of 252022121 is about 15875.2045971068. The cubic root of 252022121 is about 631.6544412607.

Adding to 252022121 its reverse (121220252), we get a palindrome (373242373).

The spelling of 252022121 in words is "two hundred fifty-two million, twenty-two thousand, one hundred twenty-one".