21020023302300 has 432 divisors, whose sum is σ = 74193294887712. Its totient is φ = 4932855244800.

The previous prime is 21020023302221. The next prime is 21020023302379. The reversal of 21020023302300 is 320332002012.

It is a happy number.

21020023302300 is a `hidden beast` number, since 2 + 1 + 0 + 200 + 233 + 0 + 230 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (21020023302221) and next prime (21020023302379).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 72015454 + ... + 72306746.

It is an arithmetic number, because the mean of its divisors is an integer number (171743738166).

Almost surely, 2^{21020023302300} is an apocalyptic number.

21020023302300 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 21020023302300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37096647443856).

21020023302300 is an abundant number, since it is smaller than the sum of its proper divisors (53173271585412).

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

21020023302300 is a wasteful number, since it uses less digits than its factorization.

21020023302300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291558 (or 291548 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

Adding to 21020023302300 its reverse (320332002012), we get a palindrome (21340355304312).

The spelling of 21020023302300 in words is "twenty-one trillion, twenty billion, twenty-three million, three hundred two thousand, three hundred".