22011221220100 has 36 divisors (see below), whose sum is σ = 54587828627584. Its totient is φ = 7546704418080.

The previous prime is 22011221220097. The next prime is 22011221220137. The reversal of 22011221220100 is 102212211022.

It is a happy 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, 15722300172 + ... + 15722301571.

Almost surely, 2^{22011221220100} is an apocalyptic number.

22011221220100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22011221220100 is an abundant number, since it is smaller than the sum of its proper divisors (32576607407484).

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

22011221220100 is a wasteful number, since it uses less digits than its factorization.

22011221220100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31444601764 (or 31444601757 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 22011221220100 its reverse (102212211022), we get a palindrome (22113433431122).

The spelling of 22011221220100 in words is "twenty-two trillion, eleven billion, two hundred twenty-one million, two hundred twenty thousand, one hundred".