121002333221 has 16 divisors (see below), whose sum is σ = 156062125440. Its totient is φ = 91036236480.

The previous prime is 121002333217. The next prime is 121002333239. The reversal of 121002333221 is 122333200121.

It is not a de Polignac number, because 121002333221 - 2² = 121002333217 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 121002333193 and 121002333202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121002333211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27091886 + ... + 27096351.

It is an arithmetic number, because the mean of its divisors is an integer number (9753882840).

Almost surely, 2^121002333221 is an apocalyptic number.

121002333221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

121002333221 is a deficient number, since it is larger than the sum of its proper divisors (35059792219).

121002333221 is a wasteful number, since it uses less digits than its factorization.

121002333221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54188284.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 121002333221 its reverse (122333200121), we get a palindrome (243335533342).

The spelling of 121002333221 in words is "one hundred twenty-one billion, two million, three hundred thirty-three thousand, two hundred twenty-one".