121301212403 has 24 divisors (see below), whose sum is σ = 150002827920. Its totient is φ = 97524907200.

The previous prime is 121301212349. The next prime is 121301212433. The reversal of 121301212403 is 304212103121.

It is not a de Polignac number, because 121301212403 - 2¹⁰ = 121301211379 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121301212433) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 550976 + ... + 739037.

It is an arithmetic number, because the mean of its divisors is an integer number (6250117830).

Almost surely, 2^121301212403 is an apocalyptic number.

121301212403 is a deficient number, since it is larger than the sum of its proper divisors (28701615517).

121301212403 is a wasteful number, since it uses less digits than its factorization.

121301212403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1290147 (or 1290140 counting only the distinct ones).

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

Adding to 121301212403 its reverse (304212103121), we get a palindrome (425513315524).

The spelling of 121301212403 in words is "one hundred twenty-one billion, three hundred one million, two hundred twelve thousand, four hundred three".