2221738818024 has 128 divisors (see below), whose sum is σ = 6218524224000. Its totient is φ = 655770643200.

The previous prime is 2221738817993. The next prime is 2221738818029. The reversal of 2221738818024 is 4208188371222.

It is a super-2 number, since 2×2221738818024² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2221738818029) 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, 1043479 + ... + 2352089.

It is an arithmetic number, because the mean of its divisors is an integer number (48582220500).

Almost surely, 2^{2221738818024} is an apocalyptic number.

2221738818024 is a gapful number since it is divisible by the number (24) 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 2221738818024, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3109262112000).

2221738818024 is an abundant number, since it is smaller than the sum of its proper divisors (3996785405976).

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

2221738818024 is a wasteful number, since it uses less digits than its factorization.

2221738818024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1308799 (or 1308795 counting only the distinct ones).

The product of its (nonzero) digits is 688128, while the sum is 48.

The spelling of 2221738818024 in words is "two trillion, two hundred twenty-one billion, seven hundred thirty-eight million, eight hundred eighteen thousand, twenty-four".