21304244522 has 32 divisors (see below), whose sum is σ = 35374838400. Its totient is φ = 9541324800.

The previous prime is 21304244497. The next prime is 21304244537. The reversal of 21304244522 is 22544240312.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3259754 + ... + 3266282.

It is an arithmetic number, because the mean of its divisors is an integer number (1105463700).

Almost surely, 2^21304244522 is an apocalyptic number.

21304244522 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21304244522 is a deficient number, since it is larger than the sum of its proper divisors (14070593878).

21304244522 is a wasteful number, since it uses less digits than its factorization.

21304244522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8702.

The product of its (nonzero) digits is 15360, while the sum is 29.

Adding to 21304244522 its reverse (22544240312), we get a palindrome (43848484834).

The spelling of 21304244522 in words is "twenty-one billion, three hundred four million, two hundred forty-four thousand, five hundred twenty-two".