12021012222100 has 72 divisors (see below), whose sum is σ = 29832975011840. Its totient is φ = 4118605384320.

The previous prime is 12021012222071. The next prime is 12021012222101. The reversal of 12021012222100 is 122221012021.

It is a happy number.

12021012222100 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12021012222101) 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, 5008404 + ... + 7009003.

Almost surely, 2^{12021012222100} is an apocalyptic number.

12021012222100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12021012222100 is an abundant number, since it is smaller than the sum of its proper divisors (17811962789740).

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

12021012222100 is a wasteful number, since it uses less digits than its factorization.

12021012222100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12018857 (or 12018850 counting only the distinct ones).

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

Adding to 12021012222100 its reverse (122221012021), we get a palindrome (12143233234121).

The spelling of 12021012222100 in words is "twelve trillion, twenty-one billion, twelve million, two hundred twenty-two thousand, one hundred".