12212112212001 has 24 divisors (see below), whose sum is σ = 19001467022720. Its totient is φ = 7513228076256.

The previous prime is 12212112211993. The next prime is 12212112212039. The reversal of 12212112212001 is 10021221121221.

12212112212001 is a `hidden beast` number, since 1 + 221 + 21 + 1 + 221 + 200 + 1 = 666.

It is not a de Polignac number, because 12212112212001 - 2³ = 12212112211993 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12212112212101) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12858271 + ... + 13775316.

Almost surely, 2^{12212112212001} is an apocalyptic number.

It is an amenable number.

12212112212001 is a deficient number, since it is larger than the sum of its proper divisors (6789354810719).

12212112212001 is a wasteful number, since it uses less digits than its factorization.

12212112212001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26637525 (or 26637522 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 12212112212001 its reverse (10021221121221), we get a palindrome (22233333333222).

The spelling of 12212112212001 in words is "twelve trillion, two hundred twelve billion, one hundred twelve million, two hundred twelve thousand, one".