2221233621464 has 128 divisors (see below), whose sum is σ = 5077241326080. Its totient is φ = 897489331200.

The previous prime is 2221233621457. The next prime is 2221233621491. The reversal of 2221233621464 is 4641263321222.

It is a super-2 number, since 2×2221233621464² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3174644 + ... + 3810620.

It is an arithmetic number, because the mean of its divisors is an integer number (39665947860).

Almost surely, 2^{2221233621464} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2221233621464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2538620663040).

2221233621464 is an abundant number, since it is smaller than the sum of its proper divisors (2856007704616).

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

2221233621464 is a wasteful number, since it uses less digits than its factorization.

2221233621464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 636121 (or 636117 counting only the distinct ones).

The product of its digits is 165888, while the sum is 38.

Adding to 2221233621464 its reverse (4641263321222), we get a palindrome (6862496942686).

The spelling of 2221233621464 in words is "two trillion, two hundred twenty-one billion, two hundred thirty-three million, six hundred twenty-one thousand, four hundred sixty-four".