22001021021112 has 128 divisors (see below), whose sum is σ = 63383592476160. Its totient is φ = 6233718965760.

The previous prime is 22001021021101. The next prime is 22001021021131. The reversal of 22001021021112 is 21112012010022.

It is a super-2 number, since 2×22001021021112² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22001021021091 and 22001021021100.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 31633618 + ... + 32321630.

It is an arithmetic number, because the mean of its divisors is an integer number (495184316220).

Almost surely, 2^{22001021021112} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22001021021112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31691796238080).

22001021021112 is an abundant number, since it is smaller than the sum of its proper divisors (41382571455048).

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

22001021021112 is a wasteful number, since it uses less digits than its factorization.

22001021021112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 689613 (or 689609 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 22001021021112 its reverse (21112012010022), we get a palindrome (43113033031134).

The spelling of 22001021021112 in words is "twenty-two trillion, one billion, twenty-one million, twenty-one thousand, one hundred twelve".