21202130222300 has 72 divisors (see below), whose sum is σ = 47665434216960. Its totient is φ = 8176313017600.

The previous prime is 21202130222237. The next prime is 21202130222303. The reversal of 21202130222300 is 322203120212.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21202130222303) 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, 3436316 + ... + 7362915.

It is an arithmetic number, because the mean of its divisors is an integer number (662019919680).

Almost surely, 2^{21202130222300} is an apocalyptic number.

21202130222300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21202130222300 is an abundant number, since it is smaller than the sum of its proper divisors (26463303994660).

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

21202130222300 is a wasteful number, since it uses less digits than its factorization.

21202130222300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10799951 (or 10799944 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 21202130222300 its reverse (322203120212), we get a palindrome (21524333342512).

The spelling of 21202130222300 in words is "twenty-one trillion, two hundred two billion, one hundred thirty million, two hundred twenty-two thousand, three hundred".