21023223031032 has 256 divisors, whose sum is σ = 59443625779200. Its totient is φ = 6160809984000.

The previous prime is 21023223031009. The next prime is 21023223031079. The reversal of 21023223031032 is 23013032232012.

21023223031032 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×21023223031032² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a junction number, because it is equal to n+sod(n) for n = 21023223030993 and 21023223031011.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1643588557 + ... + 1643601347.

It is an arithmetic number, because the mean of its divisors is an integer number (232201663200).

Almost surely, 2^{21023223031032} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21023223031032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29721812889600).

21023223031032 is an abundant number, since it is smaller than the sum of its proper divisors (38420402748168).

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

21023223031032 is a wasteful number, since it uses less digits than its factorization.

21023223031032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17358 (or 17354 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 24.

Adding to 21023223031032 its reverse (23013032232012), we get a palindrome (44036255263044).

The spelling of 21023223031032 in words is "twenty-one trillion, twenty-three billion, two hundred twenty-three million, thirty-one thousand, thirty-two".