1201202231111 has 2 divisors, whose sum is σ = 1201202231112. Its totient is φ = 1201202231110.

The previous prime is 1201202230979. The next prime is 1201202231189. The reversal of 1201202231111 is 1111322021021.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (1111322021021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1201202231111 - 2²² = 1201198036807 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1201202231111.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1201202236111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600601115555 + 600601115556.

It is an arithmetic number, because the mean of its divisors is an integer number (600601115556).

Almost surely, 2^{1201202231111} is an apocalyptic number.

1201202231111 is a deficient number, since it is larger than the sum of its proper divisors (1).

1201202231111 is an equidigital number, since it uses as much as digits as its factorization.

1201202231111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 1201202231111 its reverse (1111322021021), we get a palindrome (2312524252132).

The spelling of 1201202231111 in words is "one trillion, two hundred one billion, two hundred two million, two hundred thirty-one thousand, one hundred eleven".