12002011101 has 12 divisors (see below), whose sum is σ = 18356017212. Its totient is φ = 7530673536.

The previous prime is 12002011097. The next prime is 12002011157. The reversal of 12002011101 is 10111020021.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 3915505476 + 8086505625 = 62574^2 + 89925^2 .

It is not a de Polignac number, because 12002011101 - 2² = 12002011097 is a prime.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12002011001) 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, 39222106 + ... + 39222411.

It is an arithmetic number, because the mean of its divisors is an integer number (1529668101).

Almost surely, 2^12002011101 is an apocalyptic number.

It is an amenable number.

12002011101 is a deficient number, since it is larger than the sum of its proper divisors (6354006111).

12002011101 is a wasteful number, since it uses less digits than its factorization.

12002011101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78444540 (or 78444537 counting only the distinct ones).

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

Adding to 12002011101 its reverse (10111020021), we get a palindrome (22113031122).

The spelling of 12002011101 in words is "twelve billion, two million, eleven thousand, one hundred one".