12100001011 has 4 divisors (see below), whose sum is σ = 13828572592. Its totient is φ = 10371429432.

The previous prime is 12100000987. The next prime is 12100001029. The reversal of 12100001011 is 11010000121.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 12100001011 - 2³¹ = 9952517363 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (7), and also a Moran number because the ratio is a prime number: 1728571573 = 12100001011 / (1 + 2 + 1 + 0 + 0 + 0 + 0 + 1 + 0 + 1 + 1).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12100000985 and 12100001003.

It is not an unprimeable number, because it can be changed into a prime (12100001041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 864285780 + ... + 864285793.

It is an arithmetic number, because the mean of its divisors is an integer number (3457143148).

Almost surely, 2^12100001011 is an apocalyptic number.

12100001011 is a deficient number, since it is larger than the sum of its proper divisors (1728571581).

12100001011 is an equidigital number, since it uses as much as digits as its factorization.

12100001011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1728571580.

The product of its (nonzero) digits is 2, while the sum is 7.

Adding to 12100001011 its reverse (11010000121), we get a palindrome (23110001132).

The spelling of 12100001011 in words is "twelve billion, one hundred million, one thousand, eleven".