212111134427 has 2 divisors, whose sum is σ = 212111134428. Its totient is φ = 212111134426.

The previous prime is 212111134399. The next prime is 212111134441. The reversal of 212111134427 is 724431111212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 212111134427 - 2³⁶ = 143391657691 is a prime.

It is a super-2 number, since 2×212111134427² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 212111134427.

It is not a weakly prime, because it can be changed into another prime (212111134327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106055567213 + 106055567214.

It is an arithmetic number, because the mean of its divisors is an integer number (106055567214).

Almost surely, 2^212111134427 is an apocalyptic number.

212111134427 is a deficient number, since it is larger than the sum of its proper divisors (1).

212111134427 is an equidigital number, since it uses as much as digits as its factorization.

212111134427 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2688, while the sum is 29.

Adding to 212111134427 its reverse (724431111212), we get a palindrome (936542245639).

The spelling of 212111134427 in words is "two hundred twelve billion, one hundred eleven million, one hundred thirty-four thousand, four hundred twenty-seven".