1271399122 has 8 divisors (see below), whose sum is σ = 2179541376. Its totient is φ = 544885332.

The previous prime is 1271399093. The next prime is 1271399131. The reversal of 1271399122 is 2219931721.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45407098 + ... + 45407125.

It is an arithmetic number, because the mean of its divisors is an integer number (272442672).

Almost surely, 2^1271399122 is an apocalyptic number.

1271399122 is a deficient number, since it is larger than the sum of its proper divisors (908142254).

1271399122 is an equidigital number, since it uses as much as digits as its factorization.

1271399122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90814232.

The product of its digits is 13608, while the sum is 37.

The square root of 1271399122 is about 35656.6841139218. The cubic root of 1271399122 is about 1083.3296651447.

The spelling of 1271399122 in words is "one billion, two hundred seventy-one million, three hundred ninety-nine thousand, one hundred twenty-two".