21322011113420 has 24 divisors (see below), whose sum is σ = 44852503130064. Its totient is φ = 8514274961216.

The previous prime is 21322011113411. The next prime is 21322011113423. The reversal of 21322011113420 is 2431111022312.

It is not an unprimeable number, because it can be changed into a prime (21322011113423) 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, 908080727 + ... + 908104206.

It is an arithmetic number, because the mean of its divisors is an integer number (1868854297086).

Almost surely, 2^{21322011113420} is an apocalyptic number.

21322011113420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21322011113420 is an abundant number, since it is smaller than the sum of its proper divisors (23530492016644).

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

21322011113420 is a wasteful number, since it uses less digits than its factorization.

21322011113420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1816185529 (or 1816185527 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 23.

Adding to 21322011113420 its reverse (2431111022312), we get a palindrome (23753122135732).

The spelling of 21322011113420 in words is "twenty-one trillion, three hundred twenty-two billion, eleven million, one hundred thirteen thousand, four hundred twenty".