12012210023100 has 144 divisors (see below), whose sum is σ = 39731848665600. Its totient is φ = 2744854859520.

The previous prime is 12012210023063. The next prime is 12012210023123. The reversal of 12012210023100 is 132001221021.

It is a super-2 number, since 2×12012210023100² (a number of 27 digits) contains 22 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 12012210023100.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6460441 + ... + 8109359.

Almost surely, 2^{12012210023100} is an apocalyptic number.

12012210023100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12012210023100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19865924332800).

12012210023100 is an abundant number, since it is smaller than the sum of its proper divisors (27719638642500).

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

12012210023100 is a wasteful number, since it uses less digits than its factorization.

12012210023100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1652412 (or 1652405 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 12012210023100 its reverse (132001221021), we get a palindrome (12144211244121).

The spelling of 12012210023100 in words is "twelve trillion, twelve billion, two hundred ten million, twenty-three thousand, one hundred".