22111122202220 has 12 divisors (see below), whose sum is σ = 46433356624704. Its totient is φ = 8844448880880.

The previous prime is 22111122202217. The next prime is 22111122202243. The reversal of 22111122202220 is 2220222111122.

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 1105556110111 = 22111122202220 / (2 + 2 + 1 + 1 + 1 + 1 + 2 + 2 + 2 + 0 + 2 + 2 + 2 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 22111122202192 and 22111122202201.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 552778055036 + ... + 552778055075.

It is an arithmetic number, because the mean of its divisors is an integer number (3869446385392).

Almost surely, 2^{22111122202220} is an apocalyptic number.

22111122202220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22111122202220 is an abundant number, since it is smaller than the sum of its proper divisors (24322234422484).

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

22111122202220 is a wasteful number, since it uses less digits than its factorization.

22111122202220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1105556110120 (or 1105556110118 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 22111122202220 its reverse (2220222111122), we get a palindrome (24331344313342).

The spelling of 22111122202220 in words is "twenty-two trillion, one hundred eleven billion, one hundred twenty-two million, two hundred two thousand, two hundred twenty".