22035621136 has 135 divisors (see below), whose sum is σ = 47415473679. Its totient is φ = 9918434304.

The previous prime is 22035621133. The next prime is 22035621137. The reversal of 22035621136 is 63112653022.

It is a happy number.

The square root of 22035621136 is 148444.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 10250347536 + 11785273600 = 101244^2 + 108560^2 .

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22035621098 and 22035621107.

It is not an unprimeable number, because it can be changed into a prime (22035621133) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 373485075 + ... + 373485133.

Almost surely, 2^22035621136 is an apocalyptic number.

22035621136 is the 148444-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22035621136

22035621136 is an abundant number, since it is smaller than the sum of its proper divisors (25379852543).

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

22035621136 is an equidigital number, since it uses as much as digits as its factorization.

22035621136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234 (or 115 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 31.

The spelling of 22035621136 in words is "twenty-two billion, thirty-five million, six hundred twenty-one thousand, one hundred thirty-six".