253022121 has 12 divisors (see below), whose sum is σ = 398701680. Its totient is φ = 153346680.

The previous prime is 253022113. The next prime is 253022153. The reversal of 253022121 is 121220352.

It is not a de Polignac number, because 253022121 - 2³ = 253022113 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 253022094 and 253022103.

It is not an unprimeable number, because it can be changed into a prime (253022171) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1277791 + ... + 1277988.

It is an arithmetic number, because the mean of its divisors is an integer number (33225140).

Almost surely, 2^253022121 is an apocalyptic number.

It is an amenable number.

253022121 is a deficient number, since it is larger than the sum of its proper divisors (145679559).

253022121 is a wasteful number, since it uses less digits than its factorization.

253022121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2555796 (or 2555793 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 253022121 is about 15906.6690730649. The cubic root of 253022121 is about 632.4887871072.

Adding to 253022121 its reverse (121220352), we get a palindrome (374242473).

The spelling of 253022121 in words is "two hundred fifty-three million, twenty-two thousand, one hundred twenty-one".