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22222222222 = 221649513239

22222222222 has 8 divisors (see below), whose sum is σ = 33334938000. Its totient is φ = 11110576224.

The previous prime is 22222222189. The next prime is 22222222223.

Multipling 22222222222 by its sum of digits (22), we get a palindrome (488888888884).

It can be divided in two parts, 2222222222 and 2, that multiplied together give a palindrome (4444444444).

It is a happy number.

22222222222 is nontrivially palindromic in base 10.

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

It is a nude number because it is divisible by every one of its digits.

22222222222 is a modest number, since divided by 222222 gives 22222 as remainder.

22222222222 is a nontrivial repdigit in base 10.

It is a plaindrome in base 10.

It is a nialpdrome in base 10.

It is a zygodrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 22222222193 and 22222222202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22222222223) 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, 213322 + ... + 299917.

It is an arithmetic number, because the mean of its divisors is an integer number (4166867250).

Almost surely, 222222222222 is an apocalyptic number.

22222222222 is a deficient number, since it is larger than the sum of its proper divisors (11112715778).

22222222222 is a wasteful number, since it uses less digits than its factorization.

22222222222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 534890.

The product of its digits is 2048, while the sum is 22.

The spelling of 22222222222 in words is "twenty-two billion, two hundred twenty-two million, two hundred twenty-two thousand, two hundred twenty-two".

Divisors: 1 2 21649 43298 513239 1026478 11111111111 22222222222