21313220311302 has 16 divisors (see below), whose sum is σ = 42679924246512. Its totient is φ = 7095492833120.

The previous prime is 21313220311247. The next prime is 21313220311333. The reversal of 21313220311302 is 20311302231312.

It is a super-2 number, since 2×21313220311302² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2228479149 + ... + 2228488712.

It is an arithmetic number, because the mean of its divisors is an integer number (2667495265407).

Almost surely, 2^{21313220311302} is an apocalyptic number.

21313220311302 is an abundant number, since it is smaller than the sum of its proper divisors (21366703935210).

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

21313220311302 is a wasteful number, since it uses less digits than its factorization.

21313220311302 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4456968663.

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 21313220311302 its reverse (20311302231312), we get a palindrome (41624522542614).

The spelling of 21313220311302 in words is "twenty-one trillion, three hundred thirteen billion, two hundred twenty million, three hundred eleven thousand, three hundred two".