12001020101 has 16 divisors (see below), whose sum is σ = 13932860544. Its totient is φ = 10123812864.

The previous prime is 12001020089. The next prime is 12001020127. The reversal of 12001020101 is 10102010021.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12001020101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12001020181) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 529661 + ... + 551853.

It is an arithmetic number, because the mean of its divisors is an integer number (870803784).

Almost surely, 2^12001020101 is an apocalyptic number.

It is an amenable number.

12001020101 is a deficient number, since it is larger than the sum of its proper divisors (1931840443).

12001020101 is a wasteful number, since it uses less digits than its factorization.

12001020101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23420.

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

Adding to 12001020101 its reverse (10102010021), we get a palindrome (22103030122).

The spelling of 12001020101 in words is "twelve billion, one million, twenty thousand, one hundred one".