121201421303 has 4 divisors (see below), whose sum is σ = 121202121120. Its totient is φ = 121200721488.

The previous prime is 121201421267. The next prime is 121201421317. The reversal of 121201421303 is 303124102121.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121201421303 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121201421203) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 122258 + ... + 507296.

It is an arithmetic number, because the mean of its divisors is an integer number (30300530280).

Almost surely, 2^121201421303 is an apocalyptic number.

121201421303 is a deficient number, since it is larger than the sum of its proper divisors (699817).

121201421303 is an equidigital number, since it uses as much as digits as its factorization.

121201421303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 699816.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 121201421303 its reverse (303124102121), we get a palindrome (424325523424).

The spelling of 121201421303 in words is "one hundred twenty-one billion, two hundred one million, four hundred twenty-one thousand, three hundred three".