1203211113311 has 2 divisors, whose sum is σ = 1203211113312. Its totient is φ = 1203211113310.

The previous prime is 1203211113301. The next prime is 1203211113347. The reversal of 1203211113311 is 1133111123021.

It is a weak prime.

It is an emirp because it is prime and its reverse (1133111123021) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1203211113311 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1203211113301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 601605556655 + 601605556656.

It is an arithmetic number, because the mean of its divisors is an integer number (601605556656).

Almost surely, 2^{1203211113311} is an apocalyptic number.

1203211113311 is a deficient number, since it is larger than the sum of its proper divisors (1).

1203211113311 is an equidigital number, since it uses as much as digits as its factorization.

1203211113311 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 20.

Adding to 1203211113311 its reverse (1133111123021), we get a palindrome (2336322236332).

The spelling of 1203211113311 in words is "one trillion, two hundred three billion, two hundred eleven million, one hundred thirteen thousand, three hundred eleven".