121123221321 has 8 divisors (see below), whose sum is σ = 161900367264. Its totient is φ = 80547444800.

The previous prime is 121123221313. The next prime is 121123221367. The reversal of 121123221321 is 123122321121.

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 121123221321 - 2³ = 121123221313 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121123221301) 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, 50340951 + ... + 50343356.

It is an arithmetic number, because the mean of its divisors is an integer number (20237545908).

Almost surely, 2^121123221321 is an apocalyptic number.

It is an amenable number.

121123221321 is a deficient number, since it is larger than the sum of its proper divisors (40777145943).

121123221321 is a wasteful number, since it uses less digits than its factorization.

121123221321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100684711.

The product of its digits is 288, while the sum is 21.

Adding to 121123221321 its reverse (123122321121), we get a palindrome (244245542442).

The spelling of 121123221321 in words is "one hundred twenty-one billion, one hundred twenty-three million, two hundred twenty-one thousand, three hundred twenty-one".