121123203321 has 16 divisors (see below), whose sum is σ = 171013201344. Its totient is φ = 75991878144.

The previous prime is 121123203281. The next prime is 121123203353. The reversal of 121123203321 is 123302321121.

It is not a de Polignac number, because 121123203321 - 2¹¹ = 121123201273 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121123203361) 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, 481261 + ... + 688373.

It is an arithmetic number, because the mean of its divisors is an integer number (10688325084).

Almost surely, 2^121123203321 is an apocalyptic number.

It is an amenable number.

121123203321 is a deficient number, since it is larger than the sum of its proper divisors (49889998023).

121123203321 is a wasteful number, since it uses less digits than its factorization.

121123203321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218600.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 121123203321 its reverse (123302321121), we get a palindrome (244425524442).

The spelling of 121123203321 in words is "one hundred twenty-one billion, one hundred twenty-three million, two hundred three thousand, three hundred twenty-one".