21023430302000 has 240 divisors, whose sum is σ = 59798643802560. Its totient is φ = 7127041152000.

The previous prime is 21023430301919. The next prime is 21023430302003. The reversal of 21023430302000 is 20303432012.

It is a super-2 number, since 2×21023430302000² (a number of 27 digits) contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (21023430302003) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7516805 + ... + 9927195.

It is an arithmetic number, because the mean of its divisors is an integer number (249161015844).

Almost surely, 2^{21023430302000} is an apocalyptic number.

21023430302000 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 21023430302000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29899321901280).

21023430302000 is an abundant number, since it is smaller than the sum of its proper divisors (38775213500560).

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

21023430302000 is a wasteful number, since it uses less digits than its factorization.

21023430302000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2410517 (or 2410494 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 20.

Adding to 21023430302000 its reverse (20303432012), we get a palindrome (21043733734012).

The spelling of 21023430302000 in words is "twenty-one trillion, twenty-three billion, four hundred thirty million, three hundred two thousand".