21222342130 has 32 divisors (see below), whose sum is σ = 41806171008. Its totient is φ = 7692547200.

The previous prime is 21222342101. The next prime is 21222342157. The reversal of 21222342130 is 3124322212.

It is a Harshad number since it is a multiple of its sum of digits (22).

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, 273766 + ... + 342625.

It is an arithmetic number, because the mean of its divisors is an integer number (1306442844).

Almost surely, 2^21222342130 is an apocalyptic number.

21222342130 is a deficient number, since it is larger than the sum of its proper divisors (20583828878).

21222342130 is a wasteful number, since it uses less digits than its factorization.

21222342130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 616722.

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 21222342130 its reverse (3124322212), we get a palindrome (24346664342).

The spelling of 21222342130 in words is "twenty-one billion, two hundred twenty-two million, three hundred forty-two thousand, one hundred thirty".