121231201203113 has 2 divisors, whose sum is σ = 121231201203114. Its totient is φ = 121231201203112.

The previous prime is 121231201203109. The next prime is 121231201203173. The reversal of 121231201203113 is 311302102132121.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 90629029125184 + 30602172077929 = 9519928^2 + 5531923^2 .

It is a cyclic number.

It is not a de Polignac number, because 121231201203113 - 2² = 121231201203109 is a prime.

It is not a weakly prime, because it can be changed into another prime (121231201203173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60615600601556 + 60615600601557.

It is an arithmetic number, because the mean of its divisors is an integer number (60615600601557).

Almost surely, 2^{121231201203113} is an apocalyptic number.

It is an amenable number.

121231201203113 is a deficient number, since it is larger than the sum of its proper divisors (1).

121231201203113 is an equidigital number, since it uses as much as digits as its factorization.

121231201203113 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 23.

Adding to 121231201203113 its reverse (311302102132121), we get a palindrome (432533303335234).

The spelling of 121231201203113 in words is "one hundred twenty-one trillion, two hundred thirty-one billion, two hundred one million, two hundred three thousand, one hundred thirteen".