12121201000001 has 8 divisors (see below), whose sum is σ = 12512262495744. Its totient is φ = 11730142942560.

The previous prime is 12121200999937. The next prime is 12121201000009. The reversal of 12121201000001 is 10000010212121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12121201000001 - 2⁶ = 12121200999937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12121201000009) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7638605 + ... + 9087941.

It is an arithmetic number, because the mean of its divisors is an integer number (1564032811968).

Almost surely, 2^{12121201000001} is an apocalyptic number.

It is an amenable number.

12121201000001 is a deficient number, since it is larger than the sum of its proper divisors (391061495743).

12121201000001 is a wasteful number, since it uses less digits than its factorization.

12121201000001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1719151.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 12121201000001 its reverse (10000010212121), we get a palindrome (22121211212122).

The spelling of 12121201000001 in words is "twelve trillion, one hundred twenty-one billion, two hundred one million, one", and thus it is an aban number.