1270220151 has 4 divisors (see below), whose sum is σ = 1693626872. Its totient is φ = 846813432.

The previous prime is 1270220123. The next prime is 1270220173. The reversal of 1270220151 is 1510220721.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1270220151 - 2⁶ = 1270220087 is a prime.

It is a super-2 number, since 2×1270220151² = 3226918464012925602, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1270220251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 211703356 + ... + 211703361.

It is an arithmetic number, because the mean of its divisors is an integer number (423406718).

Almost surely, 2^1270220151 is an apocalyptic number.

1270220151 is a deficient number, since it is larger than the sum of its proper divisors (423406721).

1270220151 is an equidigital number, since it uses as much as digits as its factorization.

1270220151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 423406720.

The product of its (nonzero) digits is 280, while the sum is 21.

The square root of 1270220151 is about 35640.1480215781. The cubic root of 1270220151 is about 1082.9947036502.

Adding to 1270220151 its reverse (1510220721), we get a palindrome (2780440872).

The spelling of 1270220151 in words is "one billion, two hundred seventy million, two hundred twenty thousand, one hundred fifty-one".