21322220000 has 60 divisors (see below), whose sum is σ = 52455908736. Its totient is φ = 8528880000.

The previous prime is 21322219991. The next prime is 21322220009. The reversal of 21322220000 is 2222312.

It is an interprime number because it is at equal distance from previous prime (21322219991) and next prime (21322220009).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21322220009) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 513056 + ... + 553055.

Almost surely, 2^21322220000 is an apocalyptic number.

21322220000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21322220000 is an abundant number, since it is smaller than the sum of its proper divisors (31133688736).

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

21322220000 is an equidigital number, since it uses as much as digits as its factorization.

21322220000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1066141 (or 1066118 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 14.

Adding to 21322220000 its reverse (2222312), we get a palindrome (21324442312).

The spelling of 21322220000 in words is "twenty-one billion, three hundred twenty-two million, two hundred twenty thousand".