121212122001 has 8 divisors (see below), whose sum is σ = 161633261280. Its totient is φ = 80799532032.

The previous prime is 121212121997. The next prime is 121212122021. The reversal of 121212122001 is 100221212121.

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

It is not a de Polignac number, because 121212122001 - 2² = 121212121997 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121212122021) 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, 2104171 + ... + 2161008.

It is an arithmetic number, because the mean of its divisors is an integer number (20204157660).

Almost surely, 2^121212122001 is an apocalyptic number.

It is an amenable number.

121212122001 is a deficient number, since it is larger than the sum of its proper divisors (40421139279).

121212122001 is an equidigital number, since it uses as much as digits as its factorization.

121212122001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4274655.

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

Adding to 121212122001 its reverse (100221212121), we get a palindrome (221433334122).

The spelling of 121212122001 in words is "one hundred twenty-one billion, two hundred twelve million, one hundred twenty-two thousand, one".