21312300322200 has 96 divisors (see below), whose sum is σ = 66414037800960. Its totient is φ = 5653524662400.

The previous prime is 21312300322193. The next prime is 21312300322231. The reversal of 21312300322200 is 222300321312.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 92871004 + ... + 93100203.

It is an arithmetic number, because the mean of its divisors is an integer number (691812893760).

Almost surely, 2^{21312300322200} is an apocalyptic number.

21312300322200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21312300322200 is an abundant number, since it is smaller than the sum of its proper divisors (45101737478760).

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

21312300322200 is a wasteful number, since it uses less digits than its factorization.

21312300322200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185971417 (or 185971408 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 21312300322200 its reverse (222300321312), we get a palindrome (21534600643512).

The spelling of 21312300322200 in words is "twenty-one trillion, three hundred twelve billion, three hundred million, three hundred twenty-two thousand, two hundred".