102111211111237 has 2 divisors, whose sum is σ = 102111211111238. Its totient is φ = 102111211111236.

The previous prime is 102111211111201. The next prime is 102111211111243. The reversal of 102111211111237 is 732111112111201.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 79088401503556 + 23022809607681 = 8893166^2 + 4798209^2 .

It is a cyclic number.

It is not a de Polignac number, because 102111211111237 - 2¹¹ = 102111211109189 is a prime.

It is a super-2 number, since 2×102111211111237² (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 (102111211111297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51055605555618 + 51055605555619.

It is an arithmetic number, because the mean of its divisors is an integer number (51055605555619).

Almost surely, 2^{102111211111237} is an apocalyptic number.

It is an amenable number.

102111211111237 is a deficient number, since it is larger than the sum of its proper divisors (1).

102111211111237 is an equidigital number, since it uses as much as digits as its factorization.

102111211111237 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 168, while the sum is 25.

Adding to 102111211111237 its reverse (732111112111201), we get a palindrome (834222323222438).

The spelling of 102111211111237 in words is "one hundred two trillion, one hundred eleven billion, two hundred eleven million, one hundred eleven thousand, two hundred thirty-seven".