121110202221 has 8 divisors (see below), whose sum is σ = 163294655040. Its totient is φ = 79832942112.

The previous prime is 121110202207. The next prime is 121110202247. The reversal of 121110202221 is 122202011121.

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

It is not a de Polignac number, because 121110202221 - 2⁷ = 121110202093 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 121110202221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121110202271) 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, 226797865 + ... + 226798398.

It is an arithmetic number, because the mean of its divisors is an integer number (20411831880).

Almost surely, 2^121110202221 is an apocalyptic number.

It is an amenable number.

121110202221 is a deficient number, since it is larger than the sum of its proper divisors (42184452819).

121110202221 is an equidigital number, since it uses as much as digits as its factorization.

121110202221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 453596355.

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

Adding to 121110202221 its reverse (122202011121), we get a palindrome (243312213342).

The spelling of 121110202221 in words is "one hundred twenty-one billion, one hundred ten million, two hundred two thousand, two hundred twenty-one".