12101100010020 has 120 divisors (see below), whose sum is σ = 43384684521024. Its totient is φ = 2765965713984.

The previous prime is 12101100010003. The next prime is 12101100010033. The reversal of 12101100010020 is 2001000110121.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 12101100009984 and 12101100010011.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 533546862 + ... + 533569541.

Almost surely, 2^{12101100010020} is an apocalyptic number.

12101100010020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12101100010020 is an abundant number, since it is smaller than the sum of its proper divisors (31283584511004).

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

12101100010020 is a wasteful number, since it uses less digits than its factorization.

12101100010020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1067116431 (or 1067116420 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 12101100010020 its reverse (2001000110121), we get a palindrome (14102100120141).

The spelling of 12101100010020 in words is "twelve trillion, one hundred one billion, one hundred million, ten thousand, twenty".