21223102031300 has 36 divisors (see below), whose sum is σ = 49596756903876. Its totient is φ = 7836222288000.

The previous prime is 21223102031297. The next prime is 21223102031371. The reversal of 21223102031300 is 313020132212.

It can be written as a sum of positive squares in 6 ways, for example, as 567313252804 + 20655788778496 = 753202^2 + 4544864^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8162730251 + ... + 8162732850.

Almost surely, 2^{21223102031300} is an apocalyptic number.

21223102031300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21223102031300 is an abundant number, since it is smaller than the sum of its proper divisors (28373654872576).

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

21223102031300 is a wasteful number, since it uses less digits than its factorization.

21223102031300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16325463128 (or 16325463121 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 21223102031300 its reverse (313020132212), we get a palindrome (21536122163512).

The spelling of 21223102031300 in words is "twenty-one trillion, two hundred twenty-three billion, one hundred two million, thirty-one thousand, three hundred".