12101102001 has 10 divisors (see below), whose sum is σ = 18076954962. Its totient is φ = 8067401280.

The previous prime is 12101101967. The next prime is 12101102009. The reversal of 12101102001 is 10020110121.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 12085704225 + 15397776 = 109935^2 + 3924^2 .

It is not a de Polignac number, because 12101102001 - 2¹⁷ = 12100970929 is a prime.

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

It is not an unprimeable number, because it can be changed into a prime (12101102009) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 74698080 + ... + 74698241.

Almost surely, 2^12101102001 is an apocalyptic number.

It is an amenable number.

12101102001 is a deficient number, since it is larger than the sum of its proper divisors (5975852961).

12101102001 is an equidigital number, since it uses as much as digits as its factorization.

12101102001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149396333 (or 149396324 counting only the distinct ones).

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

Adding to 12101102001 its reverse (10020110121), we get a palindrome (22121212122).

The spelling of 12101102001 in words is "twelve billion, one hundred one million, one hundred two thousand, one".