22121201211100 has 36 divisors (see below), whose sum is σ = 48003947991664. Its totient is φ = 8848306961280.

The previous prime is 22121201211097. The next prime is 22121201211119. The reversal of 22121201211100 is 111210212122.

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, 3017464 + ... + 7303936.

Almost surely, 2^{22121201211100} is an apocalyptic number.

22121201211100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22121201211100 is an abundant number, since it is smaller than the sum of its proper divisors (25882746780564).

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

22121201211100 is a wasteful number, since it uses less digits than its factorization.

22121201211100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4338094 (or 4338087 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 22121201211100 its reverse (111210212122), we get a palindrome (22232411423222).

The spelling of 22121201211100 in words is "twenty-two trillion, one hundred twenty-one billion, two hundred one million, two hundred eleven thousand, one hundred".