21002241083 has 2 divisors, whose sum is σ = 21002241084. Its totient is φ = 21002241082.

The previous prime is 21002241049. The next prime is 21002241107. The reversal of 21002241083 is 38014220012.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21002241083 - 2¹⁰ = 21002240059 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (21002241023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10501120541 + 10501120542.

It is an arithmetic number, because the mean of its divisors is an integer number (10501120542).

Almost surely, 2^21002241083 is an apocalyptic number.

21002241083 is a deficient number, since it is larger than the sum of its proper divisors (1).

21002241083 is an equidigital number, since it uses as much as digits as its factorization.

21002241083 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 23.

Adding to 21002241083 its reverse (38014220012), we get a palindrome (59016461095).

The spelling of 21002241083 in words is "twenty-one billion, two million, two hundred forty-one thousand, eighty-three".