211421024027 has 2 divisors, whose sum is σ = 211421024028. Its totient is φ = 211421024026.

The previous prime is 211421023997. The next prime is 211421024029. The reversal of 211421024027 is 720420124112.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 211421024027 - 2⁸ = 211421023771 is a prime.

It is a super-2 number, since 2×211421024027² (a number of 23 digits) contains 22 as substring.

Together with 211421024029, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 211421023987 and 211421024005.

It is not a weakly prime, because it can be changed into another prime (211421024029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105710512013 + 105710512014.

It is an arithmetic number, because the mean of its divisors is an integer number (105710512014).

Almost surely, 2^211421024027 is an apocalyptic number.

211421024027 is a deficient number, since it is larger than the sum of its proper divisors (1).

211421024027 is an equidigital number, since it uses as much as digits as its factorization.

211421024027 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1792, while the sum is 26.

Adding to 211421024027 its reverse (720420124112), we get a palindrome (931841148139).

The spelling of 211421024027 in words is "two hundred eleven billion, four hundred twenty-one million, twenty-four thousand, twenty-seven".