12001211222001 has 16 divisors (see below), whose sum is σ = 16525985637888. Its totient is φ = 7738878067200.

The previous prime is 12001211221921. The next prime is 12001211222027. The reversal of 12001211222001 is 10022211210021.

It is not a de Polignac number, because 12001211222001 - 2¹⁴ = 12001211205617 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12001211222041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31801830 + ... + 32176991.

It is an arithmetic number, because the mean of its divisors is an integer number (1032874102368).

Almost surely, 2^{12001211222001} is an apocalyptic number.

It is an amenable number.

12001211222001 is a deficient number, since it is larger than the sum of its proper divisors (4524774415887).

12001211222001 is a wasteful number, since it uses less digits than its factorization.

12001211222001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63980872.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 12001211222001 its reverse (10022211210021), we get a palindrome (22023422432022).

The spelling of 12001211222001 in words is "twelve trillion, one billion, two hundred eleven million, two hundred twenty-two thousand, one".