121213210303 has 2 divisors, whose sum is σ = 121213210304. Its totient is φ = 121213210302.

The previous prime is 121213210277. The next prime is 121213210319. The reversal of 121213210303 is 303012312121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121213210303 - 2²¹ = 121211113151 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121213210403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60606605151 + 60606605152.

It is an arithmetic number, because the mean of its divisors is an integer number (60606605152).

Almost surely, 2^121213210303 is an apocalyptic number.

121213210303 is a deficient number, since it is larger than the sum of its proper divisors (1).

121213210303 is an equidigital number, since it uses as much as digits as its factorization.

121213210303 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 121213210303 its reverse (303012312121), we get a palindrome (424225522424).

The spelling of 121213210303 in words is "one hundred twenty-one billion, two hundred thirteen million, two hundred ten thousand, three hundred three".