20011322310 has 128 divisors (see below), whose sum is σ = 58591641600. Its totient is φ = 4272186240.

The previous prime is 20011322297. The next prime is 20011322341. The reversal of 20011322310 is 1322311002.

It is a super-2 number, since 2×20011322310² (a number of 21 digits) contains 22 as substring.

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

It is a self number, because there is not a number n which added to its sum of digits gives 20011322310.

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, 247971 + ... + 318609.

It is an arithmetic number, because the mean of its divisors is an integer number (457747200).

Almost surely, 2^20011322310 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20011322310, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29295820800).

20011322310 is an abundant number, since it is smaller than the sum of its proper divisors (38580319290).

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

20011322310 is a wasteful number, since it uses less digits than its factorization.

20011322310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70746.

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

Adding to 20011322310 its reverse (1322311002), we get a palindrome (21333633312).

The spelling of 20011322310 in words is "twenty billion, eleven million, three hundred twenty-two thousand, three hundred ten".