21222260132 has 6 divisors (see below), whose sum is σ = 37138955238. Its totient is φ = 10611130064.

The previous prime is 21222260113. The next prime is 21222260177. The reversal of 21222260132 is 23106222212.

It can be written as a sum of positive squares in only one way, i.e., 18841405696 + 2380854436 = 137264^2 + 48794^2 .

It is a super-2 number, since 2×21222260132² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21222260098 and 21222260107.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2652782513 + ... + 2652782520.

It is an arithmetic number, because the mean of its divisors is an integer number (6189825873).

Almost surely, 2^21222260132 is an apocalyptic number.

It is an amenable number.

21222260132 is a deficient number, since it is larger than the sum of its proper divisors (15916695106).

21222260132 is a wasteful number, since it uses less digits than its factorization.

21222260132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5305565037 (or 5305565035 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 21222260132 its reverse (23106222212), we get a palindrome (44328482344).

The spelling of 21222260132 in words is "twenty-one billion, two hundred twenty-two million, two hundred sixty thousand, one hundred thirty-two".