22155251242466 has 8 divisors (see below), whose sum is σ = 33486562947024. Its totient is φ = 10993063593460.

The previous prime is 22155251242459. The next prime is 22155251242469. The reversal of 22155251242466 is 66424215255122.

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

It is a super-2 number, since 2×22155251242466² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 22155251242466.

It is not an unprimeable number, because it can be changed into a prime (22155251242469) 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, 42281013560 + ... + 42281014083.

It is an arithmetic number, because the mean of its divisors is an integer number (4185820368378).

Almost surely, 2^{22155251242466} is an apocalyptic number.

22155251242466 is a deficient number, since it is larger than the sum of its proper divisors (11331311704558).

22155251242466 is a wasteful number, since it uses less digits than its factorization.

22155251242466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84562027776.

The product of its digits is 2304000, while the sum is 47.

Adding to 22155251242466 its reverse (66424215255122), we get a palindrome (88579466497588).

The spelling of 22155251242466 in words is "twenty-two trillion, one hundred fifty-five billion, two hundred fifty-one million, two hundred forty-two thousand, four hundred sixty-six".