12021010001 has 32 divisors (see below), whose sum is σ = 16300037376. Its totient is φ = 8560800000.

The previous prime is 12021009997. The next prime is 12021010009. The reversal of 12021010001 is 10001012021.

It is a cyclic number.

It is not a de Polignac number, because 12021010001 - 2² = 12021009997 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12021010009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 41651 + ... + 160551.

It is an arithmetic number, because the mean of its divisors is an integer number (509376168).

Almost surely, 2^12021010001 is an apocalyptic number.

12021010001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12021010001 is a deficient number, since it is larger than the sum of its proper divisors (4279027375).

12021010001 is a wasteful number, since it uses less digits than its factorization.

12021010001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119033.

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 12021010001 its reverse (10001012021), we get a palindrome (22022022022).

The spelling of 12021010001 in words is "twelve billion, twenty-one million, ten thousand, one".