2156226512 has 40 divisors (see below), whose sum is σ = 4584831552. Its totient is φ = 974220800.

The previous prime is 2156226493. The next prime is 2156226521.

2156226512 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×2156226512² = 9298625542103372288, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7289 + ... + 66072.

Almost surely, 2^2156226512 is an apocalyptic number.

2156226512 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

2156226512 is an abundant number, since it is smaller than the sum of its proper divisors (2428605040).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2156226512 is a wasteful number, since it uses less digits than its factorization.

2156226512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73547 (or 73541 counting only the distinct ones).

The product of its digits is 14400, while the sum is 32.

The square root of 2156226512 is about 46435.1861415457. The cubic root of 2156226512 is about 1291.9076221465.

The spelling of 2156226512 in words is "two billion, one hundred fifty-six million, two hundred twenty-six thousand, five hundred twelve".