22121100196 has 72 divisors (see below), whose sum is σ = 44554696704. Its totient is φ = 9572359680.

The previous prime is 22121100193. The next prime is 22121100203. The reversal of 22121100196 is 69100112122.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 22121100196.

It is not an unprimeable number, because it can be changed into a prime (22121100193) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3110781 + ... + 3117883.

It is an arithmetic number, because the mean of its divisors is an integer number (618815232).

Almost surely, 2^22121100196 is an apocalyptic number.

22121100196 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

22121100196 is an abundant number, since it is smaller than the sum of its proper divisors (22433596508).

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

22121100196 is a wasteful number, since it uses less digits than its factorization.

22121100196 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7421 (or 7406 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 25.

The spelling of 22121100196 in words is "twenty-two billion, one hundred twenty-one million, one hundred thousand, one hundred ninety-six".