1252122361 has 4 divisors (see below), whose sum is σ = 1430996992. Its totient is φ = 1073247732.

The previous prime is 1252122359. The next prime is 1252122371. The reversal of 1252122361 is 1632212521.

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 not a de Polignac number, because 1252122361 - 2¹ = 1252122359 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1252122371) 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, 89437305 + ... + 89437318.

It is an arithmetic number, because the mean of its divisors is an integer number (357749248).

Almost surely, 2^1252122361 is an apocalyptic number.

It is an amenable number.

1252122361 is a deficient number, since it is larger than the sum of its proper divisors (178874631).

1252122361 is an equidigital number, since it uses as much as digits as its factorization.

1252122361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178874630.

The product of its digits is 1440, while the sum is 25.

The square root of 1252122361 is about 35385.3410468233. The cubic root of 1252122361 is about 1077.8266653816.

Adding to 1252122361 its reverse (1632212521), we get a palindrome (2884334882).

The spelling of 1252122361 in words is "one billion, two hundred fifty-two million, one hundred twenty-two thousand, three hundred sixty-one".