10322521220 has 96 divisors (see below), whose sum is σ = 24378350976. Its totient is φ = 3638476800.

The previous prime is 10322521211. The next prime is 10322521243. The reversal of 10322521220 is 2212522301.

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

It is a junction number, because it is equal to n+sod(n) for n = 10322521192 and 10322521201.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2301380 + ... + 2305860.

It is an arithmetic number, because the mean of its divisors is an integer number (253941156).

Almost surely, 2^10322521220 is an apocalyptic number.

10322521220 is a gapful number since it is divisible by the number (10) 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 10322521220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12189175488).

10322521220 is an abundant number, since it is smaller than the sum of its proper divisors (14055829756).

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

10322521220 is a wasteful number, since it uses less digits than its factorization.

10322521220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4821 (or 4819 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

It can be divided in two parts, 1032 and 2521220, that added together give a palindrome (2522252).

The spelling of 10322521220 in words is "ten billion, three hundred twenty-two million, five hundred twenty-one thousand, two hundred twenty".