12021311210100 has 36 divisors (see below), whose sum is σ = 34781660435424. Its totient is φ = 3205682989280.

The previous prime is 12021311210089. The next prime is 12021311210123. The reversal of 12021311210100 is 101211312021.

It is a super-4 number, since 4×12021311210100⁴ (a number of 53 digits) contains 4444 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 12021311210100.

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, 20035518384 + ... + 20035518983.

Almost surely, 2^{12021311210100} is an apocalyptic number.

12021311210100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12021311210100 is an abundant number, since it is smaller than the sum of its proper divisors (22760349225324).

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

12021311210100 is a wasteful number, since it uses less digits than its factorization.

12021311210100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40071037384 (or 40071037377 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 12021311210100 its reverse (101211312021), we get a palindrome (12122522522121).

The spelling of 12021311210100 in words is "twelve trillion, twenty-one billion, three hundred eleven million, two hundred ten thousand, one hundred".