22031321123020 has 192 divisors, whose sum is σ = 55512920453760. Its totient is φ = 7249910169600.

The previous prime is 22031321122973. The next prime is 22031321123023. The reversal of 22031321123020 is 2032112313022.

It is a super-2 number, since 2×22031321123020² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 22031321122982 and 22031321123000.

It is not an unprimeable number, because it can be changed into a prime (22031321123023) 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, 25717432 + ... + 26560288.

It is an arithmetic number, because the mean of its divisors is an integer number (289129794030).

Almost surely, 2^{22031321123020} is an apocalyptic number.

22031321123020 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 22031321123020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27756460226880).

22031321123020 is an abundant number, since it is smaller than the sum of its proper divisors (33481599330740).

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

22031321123020 is a wasteful number, since it uses less digits than its factorization.

22031321123020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 843164 (or 843162 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 22031321123020 its reverse (2032112313022), we get a palindrome (24063433436042).

The spelling of 22031321123020 in words is "twenty-two trillion, thirty-one billion, three hundred twenty-one million, one hundred twenty-three thousand, twenty".