2212926381 has 12 divisors (see below), whose sum is σ = 3199236508. Its totient is φ = 1473997824.

The previous prime is 2212926337. The next prime is 2212926383. The reversal of 2212926381 is 1836292122.

It is a happy number.

2212926381 is a `hidden beast` number, since 2 + 2 + 12 + 9 + 2 + 638 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1006475625 + 1206450756 = 31725^2 + 34734^2 .

It is not a de Polignac number, because 2212926381 - 2¹⁰ = 2212925357 is a prime.

It is a super-2 number, since 2×2212926381² = 9794086335451514322, 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 (2212926383) 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 11 ways as a sum of consecutive naturals, for example, 96250 + ... + 117003.

Almost surely, 2^2212926381 is an apocalyptic number.

It is an amenable number.

2212926381 is a deficient number, since it is larger than the sum of its proper divisors (986310127).

2212926381 is a wasteful number, since it uses less digits than its factorization.

2212926381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214412 (or 214409 counting only the distinct ones).

The product of its digits is 20736, while the sum is 36.

The square root of 2212926381 is about 47041.7514661178. The cubic root of 2212926381 is about 1303.1337378708.

The spelling of 2212926381 in words is "two billion, two hundred twelve million, nine hundred twenty-six thousand, three hundred eighty-one".