121221022122001 has 8 divisors (see below), whose sum is σ = 121334188177664. Its totient is φ = 121107879920160.

The previous prime is 121221022121999. The next prime is 121221022122029. The reversal of 121221022122001 is 100221220122121.

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 121221022122001 - 2¹ = 121221022121999 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 121221022122001.

It is not an unprimeable number, because it can be changed into a prime (121221022122071) 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, 4213045 + ... + 16130461.

It is an arithmetic number, because the mean of its divisors is an integer number (15166773522208).

Almost surely, 2^{121221022122001} is an apocalyptic number.

It is an amenable number.

121221022122001 is a deficient number, since it is larger than the sum of its proper divisors (113166055663).

121221022122001 is a wasteful number, since it uses less digits than its factorization.

121221022122001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11926911.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 121221022122001 its reverse (100221220122121), we get a palindrome (221442242244122).

The spelling of 121221022122001 in words is "one hundred twenty-one trillion, two hundred twenty-one billion, twenty-two million, one hundred twenty-two thousand, one".