21201101083 has 2 divisors, whose sum is σ = 21201101084. Its totient is φ = 21201101082.

The previous prime is 21201101003. The next prime is 21201101101. The reversal of 21201101083 is 38010110212.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21201101083 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21201101083.

It is not a weakly prime, because it can be changed into another prime (21201101003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10600550541 + 10600550542.

It is an arithmetic number, because the mean of its divisors is an integer number (10600550542).

Almost surely, 2^21201101083 is an apocalyptic number.

21201101083 is a deficient number, since it is larger than the sum of its proper divisors (1).

21201101083 is an equidigital number, since it uses as much as digits as its factorization.

21201101083 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 21201101083 its reverse (38010110212), we get a palindrome (59211211295).

The spelling of 21201101083 in words is "twenty-one billion, two hundred one million, one hundred one thousand, eighty-three".