21614214211 has 2 divisors, whose sum is σ = 21614214212. Its totient is φ = 21614214210.

The previous prime is 21614214091. The next prime is 21614214229. The reversal of 21614214211 is 11241241612.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21614214211 - 2¹¹ = 21614212163 is a prime.

It is not a weakly prime, because it can be changed into another prime (21614211211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10807107105 + 10807107106.

It is an arithmetic number, because the mean of its divisors is an integer number (10807107106).

Almost surely, 2^21614214211 is an apocalyptic number.

21614214211 is a deficient number, since it is larger than the sum of its proper divisors (1).

21614214211 is an equidigital number, since it uses as much as digits as its factorization.

21614214211 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 768, while the sum is 25.

Adding to 21614214211 its reverse (11241241612), we get a palindrome (32855455823).

The spelling of 21614214211 in words is "twenty-one billion, six hundred fourteen million, two hundred fourteen thousand, two hundred eleven".