15621622222222 has 8 divisors (see below), whose sum is σ = 24065742342456. Its totient is φ = 7599708108072.

The previous prime is 15621622222189. The next prime is 15621622222223. The reversal of 15621622222222 is 22222222612651.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Harshad number since it is a multiple of its sum of digits (37).

15621622222222 is a modest number, since divided by 2222222 gives 1562162 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15621622222223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 105551501428 + ... + 105551501575.

It is an arithmetic number, because the mean of its divisors is an integer number (3008217792807).

Almost surely, 2^{15621622222222} is an apocalyptic number.

15621622222222 is a deficient number, since it is larger than the sum of its proper divisors (8444120120234).

15621622222222 is a wasteful number, since it uses less digits than its factorization.

15621622222222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211103003042.

The product of its digits is 92160, while the sum is 37.

Adding to 15621622222222 its reverse (22222222612651), we get a palindrome (37843844834873).

The spelling of 15621622222222 in words is "fifteen trillion, six hundred twenty-one billion, six hundred twenty-two million, two hundred twenty-two thousand, two hundred twenty-two".