20112202320 has 320 divisors, whose sum is σ = 75355176960. Its totient is φ = 4339814400.

The previous prime is 20112202309. The next prime is 20112202321. The reversal of 20112202320 is 2320221102.

It is a happy number.

It is a super-2 number, since 2×20112202320² (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 20112202320.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20112202321) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2130571 + ... + 2139989.

It is an arithmetic number, because the mean of its divisors is an integer number (235484928).

Almost surely, 2^20112202320 is an apocalyptic number.

20112202320 is a gapful number since it is divisible by the number (20) 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 20112202320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37677588480).

20112202320 is an abundant number, since it is smaller than the sum of its proper divisors (55242974640).

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

20112202320 is a wasteful number, since it uses less digits than its factorization.

20112202320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9514 (or 9508 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 20112202320 its reverse (2320221102), we get a palindrome (22432423422).

The spelling of 20112202320 in words is "twenty billion, one hundred twelve million, two hundred two thousand, three hundred twenty".