22155240511 has 8 divisors (see below), whose sum is σ = 22520937600. Its totient is φ = 21791033880.

The previous prime is 22155240473. The next prime is 22155240539. The reversal of 22155240511 is 11504255122.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22155240511 is a prime.

It is a super-2 number, since 2×22155240511² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22155240511.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22155240581) 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, 342621 + ... + 402118.

It is an arithmetic number, because the mean of its divisors is an integer number (2815117200).

Almost surely, 2^22155240511 is an apocalyptic number.

22155240511 is a deficient number, since it is larger than the sum of its proper divisors (365697089).

22155240511 is an equidigital number, since it uses as much as digits as its factorization.

22155240511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 745229.

The product of its (nonzero) digits is 4000, while the sum is 28.

Adding to 22155240511 its reverse (11504255122), we get a palindrome (33659495633).

The spelling of 22155240511 in words is "twenty-two billion, one hundred fifty-five million, two hundred forty thousand, five hundred eleven".