21122030313 has 32 divisors (see below), whose sum is σ = 32034919680. Its totient is φ = 13750819200.

The previous prime is 21122030291. The next prime is 21122030323. The reversal of 21122030313 is 31303022112.

It is not a de Polignac number, because 21122030313 - 2⁶ = 21122030249 is a prime.

It is a super-2 number, since 2×21122030313² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21122030323) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 146020 + ... + 252122.

It is an arithmetic number, because the mean of its divisors is an integer number (1001091240).

Almost surely, 2^21122030313 is an apocalyptic number.

It is an amenable number.

21122030313 is a deficient number, since it is larger than the sum of its proper divisors (10912889367).

21122030313 is a wasteful number, since it uses less digits than its factorization.

21122030313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106286 (or 106280 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 21122030313 its reverse (31303022112), we get a palindrome (52425052425).

The spelling of 21122030313 in words is "twenty-one billion, one hundred twenty-two million, thirty thousand, three hundred thirteen".