121211003203 has 4 divisors (see below), whose sum is σ = 121218216568. Its totient is φ = 121203789840.

The previous prime is 121211003167. The next prime is 121211003213. The reversal of 121211003203 is 302300112121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121211003203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121211003213) 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 3 ways as a sum of consecutive naturals, for example, 3581418 + ... + 3615103.

It is an arithmetic number, because the mean of its divisors is an integer number (30304554142).

Almost surely, 2^121211003203 is an apocalyptic number.

121211003203 is a deficient number, since it is larger than the sum of its proper divisors (7213365).

121211003203 is an equidigital number, since it uses as much as digits as its factorization.

121211003203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7213364.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 121211003203 its reverse (302300112121), we get a palindrome (423511115324).

The spelling of 121211003203 in words is "one hundred twenty-one billion, two hundred eleven million, three thousand, two hundred three".