12010021020100 has 72 divisors (see below), whose sum is σ = 26166310514568. Its totient is φ = 4784738304000.

The previous prime is 12010021020089. The next prime is 12010021020133. The reversal of 12010021020100 is 102012001021.

It can be written as a sum of positive squares in 12 ways, for example, as 1017931673476 + 10992089346624 = 1008926^2 + 3315432^2 .

It is a Harshad number since it is a multiple of its sum of digits (10).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 259366950 + ... + 259413250.

It is an arithmetic number, because the mean of its divisors is an integer number (363420979369).

Almost surely, 2^{12010021020100} is an apocalyptic number.

12010021020100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12010021020100 is an abundant number, since it is smaller than the sum of its proper divisors (14156289494468).

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

12010021020100 is a wasteful number, since it uses less digits than its factorization.

12010021020100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56665 (or 56658 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 12010021020100 its reverse (102012001021), we get a palindrome (12112033021121).

The spelling of 12010021020100 in words is "twelve trillion, ten billion, twenty-one million, twenty thousand, one hundred".