21122303310 has 64 divisors (see below), whose sum is σ = 59639457600. Its totient is φ = 5301282816.

The previous prime is 21122303297. The next prime is 21122303317. The reversal of 21122303310 is 1330322112.

It is a super-2 number, since 2×21122303310² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21122303317) 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, 2296315 + ... + 2305494.

It is an arithmetic number, because the mean of its divisors is an integer number (931866525).

Almost surely, 2^21122303310 is an apocalyptic number.

21122303310 is an abundant number, since it is smaller than the sum of its proper divisors (38517154290).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21122303310 is a wasteful number, since it uses less digits than its factorization.

21122303310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4601842 (or 4601836 counting only the distinct ones).

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

Adding to 21122303310 its reverse (1330322112), we get a palindrome (22452625422).

The spelling of 21122303310 in words is "twenty-one billion, one hundred twenty-two million, three hundred three thousand, three hundred ten".