12102011001 has 6 divisors (see below), whose sum is σ = 17480682570. Its totient is φ = 8068007328.

The previous prime is 12102010997. The next prime is 12102011057. The reversal of 12102011001 is 10011020121.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 11529605376 + 572405625 = 107376^2 + 23925^2 .

It is not a de Polignac number, because 12102011001 - 2² = 12102010997 is a prime.

It is a super-3 number, since 3×12102011001³ (a number of 31 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9), and also a Moran number because the ratio is a prime number: 1344667889 = 12102011001 / (1 + 2 + 1 + 0 + 2 + 0 + 1 + 1 + 0 + 0 + 1).

It is not an unprimeable number, because it can be changed into a prime (12102011071) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 672333936 + ... + 672333953.

It is an arithmetic number, because the mean of its divisors is an integer number (2913447095).

Almost surely, 2^12102011001 is an apocalyptic number.

It is an amenable number.

12102011001 is a deficient number, since it is larger than the sum of its proper divisors (5378671569).

12102011001 is a wasteful number, since it uses less digits than its factorization.

12102011001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1344667895 (or 1344667892 counting only the distinct ones).

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

Adding to 12102011001 its reverse (10011020121), we get a palindrome (22113031122).

The spelling of 12102011001 in words is "twelve billion, one hundred two million, eleven thousand, one".