2212821436 has 12 divisors (see below), whose sum is σ = 4425642928. Its totient is φ = 948352032.

The previous prime is 2212821433. The next prime is 2212821437. The reversal of 2212821436 is 6341282122.

2212821436 is an admirable number.

It is a super-2 number, since 2×2212821436² = 9793157415242204192, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2212821398 and 2212821407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2212821433) 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, 39514641 + ... + 39514696.

Almost surely, 2^2212821436 is an apocalyptic number.

It is an amenable number.

2212821436 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

2212821436 is a wasteful number, since it uses less digits than its factorization.

2212821436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79029348 (or 79029346 counting only the distinct ones).

The product of its digits is 9216, while the sum is 31.

The square root of 2212821436 is about 47040.6360076052. The cubic root of 2212821436 is about 1303.1131377681.

The spelling of 2212821436 in words is "two billion, two hundred twelve million, eight hundred twenty-one thousand, four hundred thirty-six".