121023310403 has 16 divisors (see below), whose sum is σ = 133753545216. Its totient is φ = 108919493760.

The previous prime is 121023310393. The next prime is 121023310459. The reversal of 121023310403 is 304013320121.

It is a cyclic number.

It is not a de Polignac number, because 121023310403 - 2⁶ = 121023310339 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121023310493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1320650 + ... + 1409312.

It is an arithmetic number, because the mean of its divisors is an integer number (8359596576).

Almost surely, 2^121023310403 is an apocalyptic number.

121023310403 is a deficient number, since it is larger than the sum of its proper divisors (12730234813).

121023310403 is a wasteful number, since it uses less digits than its factorization.

121023310403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92194.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 121023310403 its reverse (304013320121), we get a palindrome (425036630524).

The spelling of 121023310403 in words is "one hundred twenty-one billion, twenty-three million, three hundred ten thousand, four hundred three".