12021211020100 has 72 divisors (see below), whose sum is σ = 27279768233088. Its totient is φ = 4589355091200.

The previous prime is 12021211020047. The next prime is 12021211020107. The reversal of 12021211020100 is 102011212021.

It is not an unprimeable number, because it can be changed into a prime (12021211020107) 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, 4667296 + ... + 6769495.

It is an arithmetic number, because the mean of its divisors is an integer number (378885669904).

Almost surely, 2^{12021211020100} is an apocalyptic number.

12021211020100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12021211020100 is an abundant number, since it is smaller than the sum of its proper divisors (15258557212988).

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

12021211020100 is a wasteful number, since it uses less digits than its factorization.

12021211020100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11437285 (or 11437278 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 12021211020100 its reverse (102011212021), we get a palindrome (12123222232121).

The spelling of 12021211020100 in words is "twelve trillion, twenty-one billion, two hundred eleven million, twenty thousand, one hundred".