351122111111 has 2 divisors, whose sum is σ = 351122111112. Its totient is φ = 351122111110.

The previous prime is 351122111077. The next prime is 351122111141. The reversal of 351122111111 is 111111221153.

It is a strong prime.

It is an emirp because it is prime and its reverse (111111221153) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 351122111111 - 2²⁶ = 351055002247 is a prime.

It is a super-2 number, since 2×351122111111² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (351122111141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 175561055555 + 175561055556.

It is an arithmetic number, because the mean of its divisors is an integer number (175561055556).

Almost surely, 2^351122111111 is an apocalyptic number.

351122111111 is a deficient number, since it is larger than the sum of its proper divisors (1).

351122111111 is an equidigital number, since it uses as much as digits as its factorization.

351122111111 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 60, while the sum is 20.

Adding to 351122111111 its reverse (111111221153), we get a palindrome (462233332264).

The spelling of 351122111111 in words is "three hundred fifty-one billion, one hundred twenty-two million, one hundred eleven thousand, one hundred eleven".