20012321322 has 64 divisors (see below), whose sum is σ = 50865085440. Its totient is φ = 5713290288.

The previous prime is 20012321309. The next prime is 20012321323. The reversal of 20012321322 is 22312321002.

20012321322 is a `hidden beast` number, since 20 + 0 + 1 + 2 + 321 + 322 = 666.

It is a super-3 number, since 3×20012321322³ (a number of 32 digits) contains 333 as substring.

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 = 20012321295 and 20012321304.

It is not an unprimeable number, because it can be changed into a prime (20012321323) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 473793 + ... + 514299.

It is an arithmetic number, because the mean of its divisors is an integer number (794766960).

Almost surely, 2^20012321322 is an apocalyptic number.

20012321322 is an abundant number, since it is smaller than the sum of its proper divisors (30852764118).

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

20012321322 is a wasteful number, since it uses less digits than its factorization.

20012321322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41832 (or 41826 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 20012321322 its reverse (22312321002), we get a palindrome (42324642324).

It can be divided in two parts, 200123 and 21322, that added together give a triangular number (221445 = T₆₆₅).

The spelling of 20012321322 in words is "twenty billion, twelve million, three hundred twenty-one thousand, three hundred twenty-two".