22271082100 has 36 divisors (see below), whose sum is σ = 48355650700. Its totient is φ = 8903381760.

The previous prime is 22271082037. The next prime is 22271082131. The reversal of 22271082100 is 128017222.

It can be written as a sum of positive squares in 6 ways, for example, as 246741264 + 22024340836 = 15708^2 + 148406^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 116656 + ... + 241144.

Almost surely, 2^22271082100 is an apocalyptic number.

22271082100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22271082100 is an abundant number, since it is smaller than the sum of its proper divisors (26084568600).

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

22271082100 is a wasteful number, since it uses less digits than its factorization.

22271082100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126292 (or 126285 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 25.

Adding to 22271082100 its reverse (128017222), we get a palindrome (22399099322).

The spelling of 22271082100 in words is "twenty-two billion, two hundred seventy-one million, eighty-two thousand, one hundred".