121212000023203 has 2 divisors, whose sum is σ = 121212000023204. Its totient is φ = 121212000023202.

The previous prime is 121212000023189. The next prime is 121212000023221. The reversal of 121212000023203 is 302320000212121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121212000023203 - 2²¹ = 121211997926051 is a prime.

It is not a weakly prime, because it can be changed into another prime (121212000023603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60606000011601 + 60606000011602.

It is an arithmetic number, because the mean of its divisors is an integer number (60606000011602).

Almost surely, 2^{121212000023203} is an apocalyptic number.

121212000023203 is a deficient number, since it is larger than the sum of its proper divisors (1).

121212000023203 is an equidigital number, since it uses as much as digits as its factorization.

121212000023203 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 121212000023203 its reverse (302320000212121), we get a palindrome (423532000235324).

The spelling of 121212000023203 in words is "one hundred twenty-one trillion, two hundred twelve billion, twenty-three thousand, two hundred three".