121022002221 has 8 divisors (see below), whose sum is σ = 161364826080. Its totient is φ = 80680256592.

The previous prime is 121022002217. The next prime is 121022002249. The reversal of 121022002221 is 122200220121.

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

It is not a de Polignac number, because 121022002221 - 2² = 121022002217 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 121022002221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121022002261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44671 + ... + 494003.

It is an arithmetic number, because the mean of its divisors is an integer number (20170603260).

Almost surely, 2^121022002221 is an apocalyptic number.

It is an amenable number.

121022002221 is a deficient number, since it is larger than the sum of its proper divisors (40342823859).

121022002221 is an equidigital number, since it uses as much as digits as its factorization.

121022002221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 539115.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 121022002221 its reverse (122200220121), we get a palindrome (243222222342).

The spelling of 121022002221 in words is "one hundred twenty-one billion, twenty-two million, two thousand, two hundred twenty-one".