12101211010020 has 96 divisors (see below), whose sum is σ = 37122342042240. Its totient is φ = 2921036200960.

The previous prime is 12101211009977. The next prime is 12101211010043. The reversal of 12101211010020 is 2001011210121.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 12101211009978 and 12101211010005.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 39192075 + ... + 39499634.

It is an arithmetic number, because the mean of its divisors is an integer number (386691062940).

Almost surely, 2^{12101211010020} is an apocalyptic number.

12101211010020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12101211010020 is an abundant number, since it is smaller than the sum of its proper divisors (25021131032220).

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

12101211010020 is a wasteful number, since it uses less digits than its factorization.

12101211010020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78691965 (or 78691963 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 12101211010020 its reverse (2001011210121), we get a palindrome (14102222220141).

The spelling of 12101211010020 in words is "twelve trillion, one hundred one billion, two hundred eleven million, ten thousand, twenty".