21223113130 has 16 divisors (see below), whose sum is σ = 38206580904. Its totient is φ = 8488139200.

The previous prime is 21223113103. The next prime is 21223113139. The reversal of 21223113130 is 3131132212.

It can be written as a sum of positive squares in 4 ways, for example, as 21221788329 + 1324801 = 145677^2 + 1151^2 .

It is a junction number, because it is equal to n+sod(n) for n = 21223113098 and 21223113107.

It is not an unprimeable number, because it can be changed into a prime (21223113139) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55297 + ... + 213316.

Almost surely, 2^21223113130 is an apocalyptic number.

21223113130 is a deficient number, since it is larger than the sum of its proper divisors (16983467774).

21223113130 is a wasteful number, since it uses less digits than its factorization.

21223113130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276521.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 21223113130 its reverse (3131132212), we get a palindrome (24354245342).

The spelling of 21223113130 in words is "twenty-one billion, two hundred twenty-three million, one hundred thirteen thousand, one hundred thirty".