121002220001 has 8 divisors (see below), whose sum is σ = 135975739200. Its totient is φ = 106838080272.

The previous prime is 121002219997. The next prime is 121002220021. The reversal of 121002220001 is 100022200121.

It is a happy number.

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 121002220001 - 2² = 121002219997 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (121002220021) 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, 202344551 + ... + 202345148.

It is an arithmetic number, because the mean of its divisors is an integer number (16996967400).

Almost surely, 2^121002220001 is an apocalyptic number.

It is an amenable number.

121002220001 is a deficient number, since it is larger than the sum of its proper divisors (14973519199).

121002220001 is a wasteful number, since it uses less digits than its factorization.

121002220001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 404689735.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 121002220001 its reverse (100022200121), we get a palindrome (221024420122).

The spelling of 121002220001 in words is "one hundred twenty-one billion, two million, two hundred twenty thousand, one".