1226371151 has 4 divisors (see below), whose sum is σ = 1228412304. Its totient is φ = 1224330000.

The previous prime is 1226371121. The next prime is 1226371163. The reversal of 1226371151 is 1511736221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1511736221 = 61 ⋅24782561.

It is a cyclic number.

It is not a de Polignac number, because 1226371151 - 2²⁶ = 1159262287 is a prime.

It is a super-3 number, since 3×1226371151³ (a number of 28 digits) contains 333 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 (1226371121) 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, 1019675 + ... + 1020876.

It is an arithmetic number, because the mean of its divisors is an integer number (307103076).

Almost surely, 2^1226371151 is an apocalyptic number.

1226371151 is a deficient number, since it is larger than the sum of its proper divisors (2041153).

1226371151 is an equidigital number, since it uses as much as digits as its factorization.

1226371151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2041152.

The product of its digits is 2520, while the sum is 29.

The square root of 1226371151 is about 35019.5823932839. The cubic root of 1226371151 is about 1070.3865465135.

The spelling of 1226371151 in words is "one billion, two hundred twenty-six million, three hundred seventy-one thousand, one hundred fifty-one".