20122211210112 has 256 divisors, whose sum is σ = 64961161056000. Its totient is φ = 6081287915520.

The previous prime is 20122211210053. The next prime is 20122211210147. The reversal of 20122211210112 is 21101211222102.

It is a super-2 number, since 2×20122211210112² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

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, 13470439 + ... + 14889497.

It is an arithmetic number, because the mean of its divisors is an integer number (253754535375).

Almost surely, 2^{20122211210112} is an apocalyptic number.

20122211210112 is a gapful number since it is divisible by the number (22) 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 20122211210112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32480580528000).

20122211210112 is an abundant number, since it is smaller than the sum of its proper divisors (44838949845888).

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

20122211210112 is a wasteful number, since it uses less digits than its factorization.

20122211210112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1419466 (or 1419448 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 20122211210112 its reverse (21101211222102), we get a palindrome (41223422432214).

The spelling of 20122211210112 in words is "twenty trillion, one hundred twenty-two billion, two hundred eleven million, two hundred ten thousand, one hundred twelve".