21120211221283 has 2 divisors, whose sum is σ = 21120211221284. Its totient is φ = 21120211221282.

The previous prime is 21120211221233. The next prime is 21120211221289. The reversal of 21120211221283 is 38212211202112.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21120211221283 is a prime.

It is not a weakly prime, because it can be changed into another prime (21120211221289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10560105610641 + 10560105610642.

It is an arithmetic number, because the mean of its divisors is an integer number (10560105610642).

Almost surely, 2^{21120211221283} is an apocalyptic number.

21120211221283 is a deficient number, since it is larger than the sum of its proper divisors (1).

21120211221283 is an equidigital number, since it uses as much as digits as its factorization.

21120211221283 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1536, while the sum is 28.

Adding to 21120211221283 its reverse (38212211202112), we get a palindrome (59332422423395).

The spelling of 21120211221283 in words is "twenty-one trillion, one hundred twenty billion, two hundred eleven million, two hundred twenty-one thousand, two hundred eighty-three".