1888401217122 has 96 divisors (see below), whose sum is σ = 4760643513600. Its totient is φ = 529810968960.

The previous prime is 1888401217093. The next prime is 1888401217127. The reversal of 1888401217122 is 2217121048881.

1888401217122 is a `hidden beast` number, since 1 + 8 + 8 + 8 + 401 + 217 + 1 + 22 = 666.

It is not an unprimeable number, because it can be changed into a prime (1888401217127) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4398828 + ... + 4809000.

It is an arithmetic number, because the mean of its divisors is an integer number (49590036600).

Almost surely, 2^{1888401217122} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1888401217122, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2380321756800).

1888401217122 is an abundant number, since it is smaller than the sum of its proper divisors (2872242296478).

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

1888401217122 is a wasteful number, since it uses less digits than its factorization.

1888401217122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 410848 (or 410845 counting only the distinct ones).

The product of its (nonzero) digits is 114688, while the sum is 45.

The spelling of 1888401217122 in words is "one trillion, eight hundred eighty-eight billion, four hundred one million, two hundred seventeen thousand, one hundred twenty-two".