22100012121000 has 1024 divisors, whose sum is σ = 80498396160000. Its totient is φ = 4988712960000.

The previous prime is 22100012120971. The next prime is 22100012121001. The reversal of 22100012121000 is 12121000122.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is not an unprimeable number, because it can be changed into a prime (22100012121001) by changing a digit.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 35023790685 + ... + 35023791315.

It is an arithmetic number, because the mean of its divisors is an integer number (78611715000).

Almost surely, 2^{22100012121000} is an apocalyptic number.

22100012121000 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 22100012121000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40249198080000).

22100012121000 is an abundant number, since it is smaller than the sum of its proper divisors (58398384039000).

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

22100012121000 is a wasteful number, since it uses less digits than its factorization.

22100012121000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1251 (or 1237 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 22100012121000 its reverse (12121000122), we get a palindrome (22112133121122).

The spelling of 22100012121000 in words is "twenty-two trillion, one hundred billion, twelve million, one hundred twenty-one thousand".