1211101212239 has 2 divisors, whose sum is σ = 1211101212240. Its totient is φ = 1211101212238.

The previous prime is 1211101212199. The next prime is 1211101212283. The reversal of 1211101212239 is 9322121011121.

It is a weak prime.

It is an emirp because it is prime and its reverse (9322121011121) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1211101212239 is a prime.

It is a super-2 number, since 2×1211101212239² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1211101292239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605550606119 + 605550606120.

It is an arithmetic number, because the mean of its divisors is an integer number (605550606120).

Almost surely, 2^{1211101212239} is an apocalyptic number.

1211101212239 is a deficient number, since it is larger than the sum of its proper divisors (1).

1211101212239 is an equidigital number, since it uses as much as digits as its factorization.

1211101212239 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 26.

The spelling of 1211101212239 in words is "one trillion, two hundred eleven billion, one hundred one million, two hundred twelve thousand, two hundred thirty-nine".