22112201020 has 96 divisors (see below), whose sum is σ = 58230119808. Its totient is φ = 6866076672.

The previous prime is 22112201003. The next prime is 22112201047. The reversal of 22112201020 is 2010221122.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (13).

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, 18159 + ... + 211078.

It is an arithmetic number, because the mean of its divisors is an integer number (606563748).

Almost surely, 2^22112201020 is an apocalyptic number.

22112201020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22112201020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29115059904).

22112201020 is an abundant number, since it is smaller than the sum of its proper divisors (36117918788).

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

22112201020 is a wasteful number, since it uses less digits than its factorization.

22112201020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229319 (or 229317 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 22112201020 its reverse (2010221122), we get a palindrome (24122422142).

The spelling of 22112201020 in words is "twenty-two billion, one hundred twelve million, two hundred one thousand, twenty".