22111121201000 has 64 divisors (see below), whose sum is σ = 55720025459280. Its totient is φ = 8164106284800.

The previous prime is 22111121200997. The next prime is 22111121201017. The reversal of 22111121201000 is 10212111122.

It can be written as a sum of positive squares in 8 ways, for example, as 2445852022084 + 19665269178916 = 1563922^2 + 4434554^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 850414739 + ... + 850440738.

Almost surely, 2^{22111121201000} is an apocalyptic number.

22111121201000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22111121201000 is an abundant number, since it is smaller than the sum of its proper divisors (33608904258280).

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

22111121201000 is a wasteful number, since it uses less digits than its factorization.

22111121201000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1700855511 (or 1700855497 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 22111121201000 its reverse (10212111122), we get a palindrome (22121333312122).

The spelling of 22111121201000 in words is "twenty-two trillion, one hundred eleven billion, one hundred twenty-one million, two hundred one thousand".