21323103113220 has 48 divisors (see below), whose sum is σ = 59704939280448. Its totient is φ = 5686136967040.

The previous prime is 21323103113209. The next prime is 21323103113251. The reversal of 21323103113220 is 2231130132312.

It is a super-2 number, since 2×21323103113220² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17265550 + ... + 18459290.

It is an arithmetic number, because the mean of its divisors is an integer number (1243852901676).

Almost surely, 2^{21323103113220} is an apocalyptic number.

21323103113220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21323103113220 is an abundant number, since it is smaller than the sum of its proper divisors (38381836167228).

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

21323103113220 is a wasteful number, since it uses less digits than its factorization.

21323103113220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1491460 (or 1491458 counting only the distinct ones).

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

Adding to 21323103113220 its reverse (2231130132312), we get a palindrome (23554233245532).

The spelling of 21323103113220 in words is "twenty-one trillion, three hundred twenty-three billion, one hundred three million, one hundred thirteen thousand, two hundred twenty".