1121621418888 has 16 divisors (see below), whose sum is σ = 2804053547280. Its totient is φ = 373873806288.

The previous prime is 1121621418871. The next prime is 1121621418889. The reversal of 1121621418888 is 8888141261211.

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 1121621418888.

It is not an unprimeable number, because it can be changed into a prime (1121621418889) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23367112870 + ... + 23367112917.

It is an arithmetic number, because the mean of its divisors is an integer number (175253346705).

Almost surely, 2^{1121621418888} is an apocalyptic number.

It is an amenable number.

1121621418888 is an abundant number, since it is smaller than the sum of its proper divisors (1682432128392).

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

1121621418888 is a wasteful number, since it uses less digits than its factorization.

1121621418888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46734225796 (or 46734225792 counting only the distinct ones).

The product of its digits is 393216, while the sum is 51.

The spelling of 1121621418888 in words is "one trillion, one hundred twenty-one billion, six hundred twenty-one million, four hundred eighteen thousand, eight hundred eighty-eight".