121220110001 has 8 divisors (see below), whose sum is σ = 121992141984. Its totient is φ = 120449941920.

The previous prime is 121220109979. The next prime is 121220110031. The reversal of 121220110001 is 100011022121.

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 121220110001 - 2³⁴ = 104040240817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121220110031) 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, 335375 + ... + 595748.

It is an arithmetic number, because the mean of its divisors is an integer number (15249017748).

Almost surely, 2^121220110001 is an apocalyptic number.

It is an amenable number.

121220110001 is a deficient number, since it is larger than the sum of its proper divisors (772031983).

121220110001 is an equidigital number, since it uses as much as digits as its factorization.

121220110001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 931951.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 121220110001 its reverse (100011022121), we get a palindrome (221231132122).

The spelling of 121220110001 in words is "one hundred twenty-one billion, two hundred twenty million, one hundred ten thousand, one".