12101010020 has 24 divisors (see below), whose sum is σ = 27722314368. Its totient is φ = 4400367200.

The previous prime is 12101010017. The next prime is 12101010083. The reversal of 12101010020 is 2001010121.

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, 27502076 + ... + 27502515.

It is an arithmetic number, because the mean of its divisors is an integer number (1155096432).

Almost surely, 2^12101010020 is an apocalyptic number.

12101010020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12101010020 is an abundant number, since it is smaller than the sum of its proper divisors (15621304348).

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

12101010020 is a wasteful number, since it uses less digits than its factorization.

12101010020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55004611 (or 55004609 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 12101010020 its reverse (2001010121), we get a palindrome (14102020141).

The spelling of 12101010020 in words is "twelve billion, one hundred one million, ten thousand, twenty".