20111102022222 has 12 divisors (see below), whose sum is σ = 43574054381520. Its totient is φ = 6703700674068.

The previous prime is 20111102022133. The next prime is 20111102022239. The reversal of 20111102022222 is 22222020111102.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 1117283445679 = 20111102022222 / (2 + 0 + 1 + 1 + 1 + 1 + 0 + 2 + 0 + 2 + 2 + 2 + 2 + 2).

It is a junction number, because it is equal to n+sod(n) for n = 20111102022195 and 20111102022204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 558641722822 + ... + 558641722857.

It is an arithmetic number, because the mean of its divisors is an integer number (3631171198460).

Almost surely, 2^{20111102022222} is an apocalyptic number.

20111102022222 is an abundant number, since it is smaller than the sum of its proper divisors (23462952359298).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20111102022222 is a wasteful number, since it uses less digits than its factorization.

20111102022222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1117283445687 (or 1117283445684 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 20111102022222 its reverse (22222020111102), we get a palindrome (42333122133324).

The spelling of 20111102022222 in words is "twenty trillion, one hundred eleven billion, one hundred two million, twenty-two thousand, two hundred twenty-two".