2256652121 has 4 divisors (see below), whose sum is σ = 2258986752. Its totient is φ = 2254317492.

The previous prime is 2256652109. The next prime is 2256652127. The reversal of 2256652121 is 1212566522.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1212566522 = 2 ⋅606283261.

It is a cyclic number.

It is not a de Polignac number, because 2256652121 - 2¹⁸ = 2256389977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2256652127) 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, 1165865 + ... + 1167798.

It is an arithmetic number, because the mean of its divisors is an integer number (564746688).

Almost surely, 2^2256652121 is an apocalyptic number.

It is an amenable number.

2256652121 is a deficient number, since it is larger than the sum of its proper divisors (2334631).

2256652121 is an equidigital number, since it uses as much as digits as its factorization.

2256652121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2334630.

The product of its digits is 14400, while the sum is 32.

The square root of 2256652121 is about 47504.2326640479. The cubic root of 2256652121 is about 1311.6607960922.

The spelling of 2256652121 in words is "two billion, two hundred fifty-six million, six hundred fifty-two thousand, one hundred twenty-one".