12101112021100 has 36 divisors (see below), whose sum is σ = 26268822295408. Its totient is φ = 4838710392000.

The previous prime is 12101112021023. The next prime is 12101112021101. The reversal of 12101112021100 is 112021110121.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (12101112021101) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21399711 + ... + 21957910.

Almost surely, 2^{12101112021100} is an apocalyptic number.

12101112021100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12101112021100 is an abundant number, since it is smaller than the sum of its proper divisors (14167710274308).

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

12101112021100 is a wasteful number, since it uses less digits than its factorization.

12101112021100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43360426 (or 43360419 counting only the distinct ones).

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

Adding to 12101112021100 its reverse (112021110121), we get a palindrome (12213133131221).

The spelling of 12101112021100 in words is "twelve trillion, one hundred one billion, one hundred twelve million, twenty-one thousand, one hundred".