21001010322030 has 64 divisors (see below), whose sum is σ = 50452974489600. Its totient is φ = 5594653655424.

The previous prime is 21001010322029. The next prime is 21001010322113. The reversal of 21001010322030 is 3022301010012.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 600886996 + ... + 600921944.

It is an arithmetic number, because the mean of its divisors is an integer number (788327726400).

Almost surely, 2^{21001010322030} is an apocalyptic number.

21001010322030 is an abundant number, since it is smaller than the sum of its proper divisors (29451964167570).

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

21001010322030 is a wasteful number, since it uses less digits than its factorization.

21001010322030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54473.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 21001010322030 its reverse (3022301010012), we get a palindrome (24023311332042).

The spelling of 21001010322030 in words is "twenty-one trillion, one billion, ten million, three hundred twenty-two thousand, thirty".