22121110011100 has 36 divisors (see below), whose sum is σ = 48004627333600. Its totient is φ = 8848108776960.

The previous prime is 22121110011097. The next prime is 22121110011113. The reversal of 22121110011100 is 111001112122.

It is a happy number.

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, 1529205 + ... + 6825004.

Almost surely, 2^{22121110011100} is an apocalyptic number.

22121110011100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22121110011100 is an abundant number, since it is smaller than the sum of its proper divisors (25883517322500).

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

22121110011100 is a wasteful number, since it uses less digits than its factorization.

22121110011100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8380702 (or 8380695 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 22121110011100 its reverse (111001112122), we get a palindrome (22232111123222).

The spelling of 22121110011100 in words is "twenty-two trillion, one hundred twenty-one billion, one hundred ten million, eleven thousand, one hundred".