21021021222083 has 2 divisors, whose sum is σ = 21021021222084. Its totient is φ = 21021021222082.

The previous prime is 21021021222049. The next prime is 21021021222121. The reversal of 21021021222083 is 38022212012012.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21021021222083 - 2¹⁴ = 21021021205699 is a prime.

It is not a weakly prime, because it can be changed into another prime (21021021222983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10510510611041 + 10510510611042.

It is an arithmetic number, because the mean of its divisors is an integer number (10510510611042).

Almost surely, 2^{21021021222083} is an apocalyptic number.

21021021222083 is a deficient number, since it is larger than the sum of its proper divisors (1).

21021021222083 is an equidigital number, since it uses as much as digits as its factorization.

21021021222083 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 26.

Adding to 21021021222083 its reverse (38022212012012), we get a palindrome (59043233234095).

The spelling of 21021021222083 in words is "twenty-one trillion, twenty-one billion, twenty-one million, two hundred twenty-two thousand, eighty-three".