12100010021020 has 24 divisors (see below), whose sum is σ = 25438668230304. Its totient is φ = 4834547401536.

The previous prime is 12100010021009. The next prime is 12100010021059. The reversal of 12100010021020 is 2012001000121.

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

It is a junction number, because it is equal to n+sod(n) for n = 12100010020988 and 12100010021006.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 341019747 + ... + 341055226.

It is an arithmetic number, because the mean of its divisors is an integer number (1059944509596).

Almost surely, 2^{12100010021020} is an apocalyptic number.

12100010021020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12100010021020 is an abundant number, since it is smaller than the sum of its proper divisors (13338658209284).

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

12100010021020 is a wasteful number, since it uses less digits than its factorization.

12100010021020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 682075869 (or 682075867 counting only the distinct ones).

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

Adding to 12100010021020 its reverse (2012001000121), we get a palindrome (14112011021141).

The spelling of 12100010021020 in words is "twelve trillion, one hundred billion, ten million, twenty-one thousand, twenty".