121331221322001 has 16 divisors (see below), whose sum is σ = 164547103704000. Its totient is φ = 79501913134848.

The previous prime is 121331221321993. The next prime is 121331221322023. The reversal of 121331221322001 is 100223122133121.

It is not a de Polignac number, because 121331221322001 - 2³ = 121331221321993 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (121331221322081) 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, 61935796 + ... + 63864741.

It is an arithmetic number, because the mean of its divisors is an integer number (10284193981500).

Almost surely, 2^{121331221322001} is an apocalyptic number.

It is an amenable number.

121331221322001 is a deficient number, since it is larger than the sum of its proper divisors (43215882381999).

121331221322001 is a wasteful number, since it uses less digits than its factorization.

121331221322001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125806048.

The product of its (nonzero) digits is 864, while the sum is 24.

Adding to 121331221322001 its reverse (100223122133121), we get a palindrome (221554343455122).

The spelling of 121331221322001 in words is "one hundred twenty-one trillion, three hundred thirty-one billion, two hundred twenty-one million, three hundred twenty-two thousand, one".