1251222274 has 8 divisors (see below), whose sum is σ = 1877660928. Its totient is φ = 625335300.

The previous prime is 1251222211. The next prime is 1251222277. The reversal of 1251222274 is 4722221521.

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

It is not an unprimeable number, because it can be changed into a prime (1251222277) 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, 132202 + ... + 141349.

It is an arithmetic number, because the mean of its divisors is an integer number (234707616).

Almost surely, 2^1251222274 is an apocalyptic number.

1251222274 is a deficient number, since it is larger than the sum of its proper divisors (626438654).

1251222274 is a wasteful number, since it uses less digits than its factorization.

1251222274 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275840.

The product of its digits is 4480, while the sum is 28.

The square root of 1251222274 is about 35372.6204005301. The cubic root of 1251222274 is about 1077.5683385722.

Adding to 1251222274 its reverse (4722221521), we get a palindrome (5973443795).

The spelling of 1251222274 in words is "one billion, two hundred fifty-one million, two hundred twenty-two thousand, two hundred seventy-four".