21234662226 has 24 divisors (see below), whose sum is σ = 48714814044. Its totient is φ = 6661854720.

The previous prime is 21234662221. The next prime is 21234662227. The reversal of 21234662226 is 62226643212.

21234662226 is a `hidden beast` number, since 2 + 1 + 2 + 3 + 4 + 6 + 622 + 26 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 21174615225 + 60047001 = 145515^2 + 7749^2 .

It is a super-2 number, since 2×21234662226² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21234662221) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 34696855 + ... + 34697466.

Almost surely, 2^21234662226 is an apocalyptic number.

21234662226 is an abundant number, since it is smaller than the sum of its proper divisors (27480151818).

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

21234662226 is a wasteful number, since it uses less digits than its factorization.

21234662226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69394346 (or 69394343 counting only the distinct ones).

The product of its digits is 82944, while the sum is 36.

The spelling of 21234662226 in words is "twenty-one billion, two hundred thirty-four million, six hundred sixty-two thousand, two hundred twenty-six".