42211211111 has 2 divisors, whose sum is σ = 42211211112. Its totient is φ = 42211211110.

The previous prime is 42211211099. The next prime is 42211211117. The reversal of 42211211111 is 11111211224.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42211211111 - 2⁶ = 42211211047 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42211211111.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42211211117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21105605555 + 21105605556.

It is an arithmetic number, because the mean of its divisors is an integer number (21105605556).

Almost surely, 2^42211211111 is an apocalyptic number.

42211211111 is a deficient number, since it is larger than the sum of its proper divisors (1).

42211211111 is an equidigital number, since it uses as much as digits as its factorization.

42211211111 is an evil number, because the sum of its binary digits is even.

The product of its digits is 32, while the sum is 17.

Adding to 42211211111 its reverse (11111211224), we get a palindrome (53322422335).

The spelling of 42211211111 in words is "forty-two billion, two hundred eleven million, two hundred eleven thousand, one hundred eleven".