1211202110233 has 2 divisors, whose sum is σ = 1211202110234. Its totient is φ = 1211202110232.

The previous prime is 1211202110213. The next prime is 1211202110281. The reversal of 1211202110233 is 3320112021121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 669922606144 + 541279504089 = 818488^2 + 735717^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1211202110233 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1211202110233.

It is not a weakly prime, because it can be changed into another prime (1211202110213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605601055116 + 605601055117.

It is an arithmetic number, because the mean of its divisors is an integer number (605601055117).

Almost surely, 2^{1211202110233} is an apocalyptic number.

It is an amenable number.

1211202110233 is a deficient number, since it is larger than the sum of its proper divisors (1).

1211202110233 is an equidigital number, since it uses as much as digits as its factorization.

1211202110233 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 1211202110233 its reverse (3320112021121), we get a palindrome (4531314131354).

The spelling of 1211202110233 in words is "one trillion, two hundred eleven billion, two hundred two million, one hundred ten thousand, two hundred thirty-three".