21422513300 has 72 divisors (see below), whose sum is σ = 48980094240. Its totient is φ = 8110281600.

The previous prime is 21422513291. The next prime is 21422513303. The reversal of 21422513300 is 331522412.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21422513303) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2239127 + ... + 2248673.

Almost surely, 2^21422513300 is an apocalyptic number.

21422513300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21422513300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24490047120).

21422513300 is an abundant number, since it is smaller than the sum of its proper divisors (27557580940).

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

21422513300 is a wasteful number, since it uses less digits than its factorization.

21422513300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10761 (or 10754 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 23.

The spelling of 21422513300 in words is "twenty-one billion, four hundred twenty-two million, five hundred thirteen thousand, three hundred".