210023442421000 has 64 divisors (see below), whose sum is σ = 529259074933680. Its totient is φ = 77547117196800.

The previous prime is 210023442420937. The next prime is 210023442421003. The reversal of 210023442421000 is 124244320012.

It can be written as a sum of positive squares in 8 ways, for example, as 27994829148196 + 182028613272804 = 5291014^2 + 13491798^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (210023442421003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8077811709 + ... + 8077837708.

Almost surely, 2^{210023442421000} is an apocalyptic number.

210023442421000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

210023442421000 is an abundant number, since it is smaller than the sum of its proper divisors (319235632512680).

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

210023442421000 is a wasteful number, since it uses less digits than its factorization.

210023442421000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16155649451 (or 16155649437 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 25.

Adding to 210023442421000 its reverse (124244320012), we get a palindrome (210147686741012).

The spelling of 210023442421000 in words is "two hundred ten trillion, twenty-three billion, four hundred forty-two million, four hundred twenty-one thousand".