21010201323030 has 96 divisors (see below), whose sum is σ = 55615465170720. Its totient is φ = 5501506053120.

The previous prime is 21010201323029. The next prime is 21010201323053. The reversal of 21010201323030 is 3032310201012.

21010201323030 is a `hidden beast` number, since 210 + 1 + 0 + 20 + 132 + 303 + 0 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 21010201322994 and 21010201323012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2432524 + ... + 6923696.

It is an arithmetic number, because the mean of its divisors is an integer number (579327762195).

Almost surely, 2^{21010201323030} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21010201323030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27807732585360).

21010201323030 is an abundant number, since it is smaller than the sum of its proper divisors (34605263847690).

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

21010201323030 is a wasteful number, since it uses less digits than its factorization.

21010201323030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4492126 (or 4492123 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 21010201323030 its reverse (3032310201012), we get a palindrome (24042511524042).

The spelling of 21010201323030 in words is "twenty-one trillion, ten billion, two hundred one million, three hundred twenty-three thousand, thirty".