121320120003 has 8 divisors (see below), whose sum is σ = 165201865728. Its totient is φ = 79159227144.

The previous prime is 121320119993. The next prime is 121320120049. The reversal of 121320120003 is 300021023121.

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

It is not a de Polignac number, because 121320120003 - 2⁵ = 121320119971 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121320120083) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 430213051 + ... + 430213332.

It is an arithmetic number, because the mean of its divisors is an integer number (20650233216).

Almost surely, 2^121320120003 is an apocalyptic number.

121320120003 is a deficient number, since it is larger than the sum of its proper divisors (43881745725).

121320120003 is an equidigital number, since it uses as much as digits as its factorization.

121320120003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 860426433.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 121320120003 its reverse (300021023121), we get a palindrome (421341143124).

The spelling of 121320120003 in words is "one hundred twenty-one billion, three hundred twenty million, one hundred twenty thousand, three".