121100212110203 has 2 divisors, whose sum is σ = 121100212110204. Its totient is φ = 121100212110202.

The previous prime is 121100212110179. The next prime is 121100212110217. The reversal of 121100212110203 is 302011212001121.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121100212110203 is a prime.

It is a super-2 number, since 2×121100212110203² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (121100212110223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60550106055101 + 60550106055102.

It is an arithmetic number, because the mean of its divisors is an integer number (60550106055102).

Almost surely, 2^{121100212110203} is an apocalyptic number.

121100212110203 is a deficient number, since it is larger than the sum of its proper divisors (1).

121100212110203 is an equidigital number, since it uses as much as digits as its factorization.

121100212110203 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 121100212110203 its reverse (302011212001121), we get a palindrome (423111424111324).

The spelling of 121100212110203 in words is "one hundred twenty-one trillion, one hundred billion, two hundred twelve million, one hundred ten thousand, two hundred three".