121213311003 has 8 divisors (see below), whose sum is σ = 179575275600. Its totient is φ = 80808873984.

The previous prime is 121213310989. The next prime is 121213311013. The reversal of 121213311003 is 300113312121.

It is not a de Polignac number, because 121213311003 - 2³⁴ = 104033441819 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121213311013) 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, 2244690918 + ... + 2244690971.

It is an arithmetic number, because the mean of its divisors is an integer number (22446909450).

Almost surely, 2^121213311003 is an apocalyptic number.

121213311003 is a deficient number, since it is larger than the sum of its proper divisors (58361964597).

121213311003 is an equidigital number, since it uses as much as digits as its factorization.

121213311003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4489381898 (or 4489381892 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 121213311003 its reverse (300113312121), we get a palindrome (421326623124).

The spelling of 121213311003 in words is "one hundred twenty-one billion, two hundred thirteen million, three hundred eleven thousand, three".