22112121211000 has 128 divisors (see below), whose sum is σ = 53102818042560. Its totient is φ = 8613513216000.

The previous prime is 22112121210997. The next prime is 22112121211007. The reversal of 22112121211000 is 11212121122.

It is a super-2 number, since 2×22112121211000² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22112121211007) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13728040 + ... + 15253960.

Almost surely, 2^{22112121211000} is an apocalyptic number.

22112121211000 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 22112121211000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26551409021280).

22112121211000 is an abundant number, since it is smaller than the sum of its proper divisors (30990696831560).

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

22112121211000 is a wasteful number, since it uses less digits than its factorization.

22112121211000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1526322 (or 1526308 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 22112121211000 its reverse (11212121122), we get a palindrome (22123333332122).

The spelling of 22112121211000 in words is "twenty-two trillion, one hundred twelve billion, one hundred twenty-one million, two hundred eleven thousand".