121321320411 has 8 divisors (see below), whose sum is σ = 166979881984. Its totient is φ = 78271819560.

The previous prime is 121321320397. The next prime is 121321320427. The reversal of 121321320411 is 114023123121.

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

It is not a de Polignac number, because 121321320411 - 2⁶ = 121321320347 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121321321411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 652265071 + ... + 652265256.

It is an arithmetic number, because the mean of its divisors is an integer number (20872485248).

Almost surely, 2^121321320411 is an apocalyptic number.

121321320411 is a deficient number, since it is larger than the sum of its proper divisors (45658561573).

121321320411 is a wasteful number, since it uses less digits than its factorization.

121321320411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1304530361.

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

Adding to 121321320411 its reverse (114023123121), we get a palindrome (235344443532).

The spelling of 121321320411 in words is "one hundred twenty-one billion, three hundred twenty-one million, three hundred twenty thousand, four hundred eleven".