21614214233 has 2 divisors, whose sum is σ = 21614214234. Its totient is φ = 21614214232.

The previous prime is 21614214229. The next prime is 21614214269. The reversal of 21614214233 is 33241241612.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15463419904 + 6150794329 = 124352^2 + 78427^2 .

It is a cyclic number.

It is not a de Polignac number, because 21614214233 - 2² = 21614214229 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21614214196 and 21614214205.

It is not a weakly prime, because it can be changed into another prime (21614214533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10807107116 + 10807107117.

It is an arithmetic number, because the mean of its divisors is an integer number (10807107117).

Almost surely, 2^21614214233 is an apocalyptic number.

It is an amenable number.

21614214233 is a deficient number, since it is larger than the sum of its proper divisors (1).

21614214233 is an equidigital number, since it uses as much as digits as its factorization.

21614214233 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6912, while the sum is 29.

Adding to 21614214233 its reverse (33241241612), we get a palindrome (54855455845).

The spelling of 21614214233 in words is "twenty-one billion, six hundred fourteen million, two hundred fourteen thousand, two hundred thirty-three".