121323242403 has 12 divisors (see below), whose sum is σ = 191176018488. Its totient is φ = 73529237760.

The previous prime is 121323242377. The next prime is 121323242503. The reversal of 121323242403 is 304242323121.

121323242403 is a `hidden beast` number, since 1 + 2 + 1 + 3 + 232 + 424 + 0 + 3 = 666.

It is not a de Polignac number, because 121323242403 - 2¹³ = 121323234211 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121323242003) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 612743550 + ... + 612743747.

It is an arithmetic number, because the mean of its divisors is an integer number (15931334874).

Almost surely, 2^121323242403 is an apocalyptic number.

121323242403 is a deficient number, since it is larger than the sum of its proper divisors (69852776085).

121323242403 is a wasteful number, since it uses less digits than its factorization.

121323242403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1225487314 (or 1225487311 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

Adding to 121323242403 its reverse (304242323121), we get a palindrome (425565565524).

The spelling of 121323242403 in words is "one hundred twenty-one billion, three hundred twenty-three million, two hundred forty-two thousand, four hundred three".