12022001001 has 12 divisors (see below), whose sum is σ = 17366069812. Its totient is φ = 8014225536.

The previous prime is 12022000999. The next prime is 12022001029. The reversal of 12022001001 is 10010022021.

It can be written as a sum of positive squares in 2 ways, for example, as 5730338601 + 6291662400 = 75699^2 + 79320^2 .

It is not a de Polignac number, because 12022001001 - 2¹ = 12022000999 is a prime.

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

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12022001041) 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, 270765 + ... + 312021.

Almost surely, 2^12022001001 is an apocalyptic number.

It is an amenable number.

12022001001 is a deficient number, since it is larger than the sum of its proper divisors (5344068811).

12022001001 is a wasteful number, since it uses less digits than its factorization.

12022001001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73640 (or 73637 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 12022001001 its reverse (10010022021), we get a palindrome (22032023022).

The spelling of 12022001001 in words is "twelve billion, twenty-two million, one thousand, one".