12012001011 has 12 divisors (see below), whose sum is σ = 17358351192. Its totient is φ = 8004454656.

The previous prime is 12012000991. The next prime is 12012001031. The reversal of 12012001011 is 11010021021.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (12012000991) and next prime (12012001031).

It is not a de Polignac number, because 12012001011 - 2¹³ = 12011992819 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 = 12012000984 and 12012001002.

It is not an unprimeable number, because it can be changed into a prime (12012001031) 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, 273966 + ... + 314771.

It is an arithmetic number, because the mean of its divisors is an integer number (1446529266).

Almost surely, 2^12012001011 is an apocalyptic number.

12012001011 is a deficient number, since it is larger than the sum of its proper divisors (5346350181).

12012001011 is a wasteful number, since it uses less digits than its factorization.

12012001011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 591010 (or 591007 counting only the distinct ones).

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

Adding to 12012001011 its reverse (11010021021), we get a palindrome (23022022032).

The spelling of 12012001011 in words is "twelve billion, twelve million, one thousand, eleven".