121320321122221 has 8 divisors (see below), whose sum is σ = 130778401994240. Its totient is φ = 111880204318512.

The previous prime is 121320321122219. The next prime is 121320321122227. The reversal of 121320321122221 is 122221123023121.

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 121320321122221 - 2¹ = 121320321122219 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121320321122227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4491003045 + ... + 4491030058.

It is an arithmetic number, because the mean of its divisors is an integer number (16347300249280).

Almost surely, 2^{121320321122221} is an apocalyptic number.

It is an amenable number.

121320321122221 is a deficient number, since it is larger than the sum of its proper divisors (9458080872019).

121320321122221 is a wasteful number, since it uses less digits than its factorization.

121320321122221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8982034155.

The product of its (nonzero) digits is 1152, while the sum is 25.

Adding to 121320321122221 its reverse (122221123023121), we get a palindrome (243541444145342).

The spelling of 121320321122221 in words is "one hundred twenty-one trillion, three hundred twenty billion, three hundred twenty-one million, one hundred twenty-two thousand, two hundred twenty-one".