121020131303 has 2 divisors, whose sum is σ = 121020131304. Its totient is φ = 121020131302.

The previous prime is 121020131257. The next prime is 121020131347. The reversal of 121020131303 is 303131020121.

It is a strong prime.

It is an emirp because it is prime and its reverse (303131020121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 121020131303 - 2²² = 121015936999 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121020130303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60510065651 + 60510065652.

It is an arithmetic number, because the mean of its divisors is an integer number (60510065652).

Almost surely, 2^121020131303 is an apocalyptic number.

121020131303 is a deficient number, since it is larger than the sum of its proper divisors (1).

121020131303 is an equidigital number, since it uses as much as digits as its factorization.

121020131303 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 121020131303 its reverse (303131020121), we get a palindrome (424151151424).

The spelling of 121020131303 in words is "one hundred twenty-one billion, twenty million, one hundred thirty-one thousand, three hundred three".