22001022121320 has 256 divisors, whose sum is σ = 81864270259200. Its totient is φ = 5209544229120.

The previous prime is 22001022121313. The next prime is 22001022121327. The reversal of 22001022121320 is 2312122010022.

22001022121320 is a `hidden beast` number, since 2 + 200 + 1 + 0 + 22 + 121 + 320 = 666.

It is an interprime number because it is at equal distance from previous prime (22001022121313) and next prime (22001022121327).

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 = 22001022121293 and 22001022121302.

It is not an unprimeable number, because it can be changed into a prime (22001022121327) 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, 21023322 + ... + 22045001.

It is an arithmetic number, because the mean of its divisors is an integer number (319782305700).

Almost surely, 2^{22001022121320} is an apocalyptic number.

22001022121320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22001022121320 is an abundant number, since it is smaller than the sum of its proper divisors (59863248137880).

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

22001022121320 is a wasteful number, since it uses less digits than its factorization.

22001022121320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43068397 (or 43068387 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 22001022121320 its reverse (2312122010022), we get a palindrome (24313144131342).

The spelling of 22001022121320 in words is "twenty-two trillion, one billion, twenty-two million, one hundred twenty-one thousand, three hundred twenty".