111211225211263 has 2 divisors, whose sum is σ = 111211225211264. Its totient is φ = 111211225211262.

The previous prime is 111211225211249. The next prime is 111211225211347. The reversal of 111211225211263 is 362112522112111.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111211225211263 is a prime.

It is a super-2 number, since 2×111211225211263² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111211225211213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55605612605631 + 55605612605632.

It is an arithmetic number, because the mean of its divisors is an integer number (55605612605632).

Almost surely, 2^{111211225211263} is an apocalyptic number.

111211225211263 is a deficient number, since it is larger than the sum of its proper divisors (1).

111211225211263 is an equidigital number, since it uses as much as digits as its factorization.

111211225211263 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2880, while the sum is 31.

Adding to 111211225211263 its reverse (362112522112111), we get a palindrome (473323747323374).

The spelling of 111211225211263 in words is "one hundred eleven trillion, two hundred eleven billion, two hundred twenty-five million, two hundred eleven thousand, two hundred sixty-three".