22155042243 has 8 divisors (see below), whose sum is σ = 31277706768. Its totient is φ = 13901202944.

The previous prime is 22155042241. The next prime is 22155042253. The reversal of 22155042243 is 34224055122.

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

It is a cyclic number.

It is not a de Polignac number, because 22155042243 - 2¹ = 22155042241 is a prime.

It is a super-2 number, since 2×22155042243² (a number of 21 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 22155042243.

It is not an unprimeable number, because it can be changed into a prime (22155042241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 217206246 + ... + 217206347.

It is an arithmetic number, because the mean of its divisors is an integer number (3909713346).

Almost surely, 2^22155042243 is an apocalyptic number.

22155042243 is a deficient number, since it is larger than the sum of its proper divisors (9122664525).

22155042243 is a wasteful number, since it uses less digits than its factorization.

22155042243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 434412613.

The product of its (nonzero) digits is 19200, while the sum is 30.

Adding to 22155042243 its reverse (34224055122), we get a palindrome (56379097365).

The spelling of 22155042243 in words is "twenty-two billion, one hundred fifty-five million, forty-two thousand, two hundred forty-three".