21212220011083 has 2 divisors, whose sum is σ = 21212220011084. Its totient is φ = 21212220011082.

The previous prime is 21212220010997. The next prime is 21212220011089. The reversal of 21212220011083 is 38011002221212.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21212220011083 - 2²⁵ = 21212186456651 is a prime.

It is not a weakly prime, because it can be changed into another prime (21212220011089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10606110005541 + 10606110005542.

It is an arithmetic number, because the mean of its divisors is an integer number (10606110005542).

Almost surely, 2^{21212220011083} is an apocalyptic number.

21212220011083 is a deficient number, since it is larger than the sum of its proper divisors (1).

21212220011083 is an equidigital number, since it uses as much as digits as its factorization.

21212220011083 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 21212220011083 its reverse (38011002221212), we get a palindrome (59223222232295).

The spelling of 21212220011083 in words is "twenty-one trillion, two hundred twelve billion, two hundred twenty million, eleven thousand, eighty-three".