12102001011 has 12 divisors (see below), whose sum is σ = 18240697488. Its totient is φ = 7717217904.

The previous prime is 12102000949. The next prime is 12102001031. The reversal of 12102001011 is 11010020121.

It is a happy number.

It is not a de Polignac number, because 12102001011 - 2⁹ = 12102000499 is a prime.

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

It is a junction number, because it is equal to n+sod(n) for n = 12102000984 and 12102001002.

It is not an unprimeable number, because it can be changed into a prime (12102001031) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 29231680 + ... + 29232093.

It is an arithmetic number, because the mean of its divisors is an integer number (1520058124).

Almost surely, 2^12102001011 is an apocalyptic number.

12102001011 is a deficient number, since it is larger than the sum of its proper divisors (6138696477).

12102001011 is a wasteful number, since it uses less digits than its factorization.

12102001011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58463802 (or 58463799 counting only the distinct ones).

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

Adding to 12102001011 its reverse (11010020121), we get a palindrome (23112021132).

The spelling of 12102001011 in words is "twelve billion, one hundred two million, one thousand, eleven".