22012220022 has 64 divisors (see below), whose sum is σ = 47966929920. Its totient is φ = 6693830784.

The previous prime is 22012219993. The next prime is 22012220033. The reversal of 22012220022 is 22002221022.

It is a junction number, because it is equal to n+sod(n) for n = 22012219983 and 22012220010.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4472479 + ... + 4477397.

It is an arithmetic number, because the mean of its divisors is an integer number (749483280).

Almost surely, 2^22012220022 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22012220022, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23983464960).

22012220022 is an abundant number, since it is smaller than the sum of its proper divisors (25954709898).

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

22012220022 is a wasteful number, since it uses less digits than its factorization.

22012220022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5597.

The product of its (nonzero) digits is 128, while the sum is 15.

Adding to 22012220022 its reverse (22002221022), we get a palindrome (44014441044).

The spelling of 22012220022 in words is "twenty-two billion, twelve million, two hundred twenty thousand, twenty-two".