121100012203 has 4 divisors (see below), whose sum is σ = 121100764528. Its totient is φ = 121099259880.

The previous prime is 121100012167. The next prime is 121100012233. The reversal of 121100012203 is 302210001121.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121100012203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121100012233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26151 + ... + 492832.

It is an arithmetic number, because the mean of its divisors is an integer number (30275191132).

Almost surely, 2^121100012203 is an apocalyptic number.

121100012203 is a deficient number, since it is larger than the sum of its proper divisors (752325).

121100012203 is an equidigital number, since it uses as much as digits as its factorization.

121100012203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 752324.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 121100012203 its reverse (302210001121), we get a palindrome (423310013324).

The spelling of 121100012203 in words is "one hundred twenty-one billion, one hundred million, twelve thousand, two hundred three".