22051304232 has 64 divisors (see below), whose sum is σ = 56361070080. Its totient is φ = 7187012352.

The previous prime is 22051304227. The next prime is 22051304239. The reversal of 22051304232 is 23240315022.

It is a super-2 number, since 2×22051304232² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (22051304239) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 343113 + ... + 402279.

It is an arithmetic number, because the mean of its divisors is an integer number (880641720).

Almost surely, 2^22051304232 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22051304232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28180535040).

22051304232 is an abundant number, since it is smaller than the sum of its proper divisors (34309765848).

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

22051304232 is a wasteful number, since it uses less digits than its factorization.

22051304232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59522 (or 59518 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 24.

Adding to 22051304232 its reverse (23240315022), we get a palindrome (45291619254).

The spelling of 22051304232 in words is "twenty-two billion, fifty-one million, three hundred four thousand, two hundred thirty-two".