21211002221083 has 2 divisors, whose sum is σ = 21211002221084. Its totient is φ = 21211002221082.

The previous prime is 21211002221009. The next prime is 21211002221159. The reversal of 21211002221083 is 38012220011212.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21211002221083 is a prime.

It is not a weakly prime, because it can be changed into another prime (21211602221083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10605501110541 + 10605501110542.

It is an arithmetic number, because the mean of its divisors is an integer number (10605501110542).

Almost surely, 2^{21211002221083} is an apocalyptic number.

21211002221083 is a deficient number, since it is larger than the sum of its proper divisors (1).

21211002221083 is an equidigital number, since it uses as much as digits as its factorization.

21211002221083 is an evil number, because the sum of its binary digits is even.

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

Adding to 21211002221083 its reverse (38012220011212), we get a palindrome (59223222232295).

The spelling of 21211002221083 in words is "twenty-one trillion, two hundred eleven billion, two million, two hundred twenty-one thousand, eighty-three".