21352103527 has 2 divisors, whose sum is σ = 21352103528. Its totient is φ = 21352103526.

The previous prime is 21352103503. The next prime is 21352103543. The reversal of 21352103527 is 72530125312.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21352103527 - 2²³ = 21343714919 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21352100527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10676051763 + 10676051764.

It is an arithmetic number, because the mean of its divisors is an integer number (10676051764).

Almost surely, 2^21352103527 is an apocalyptic number.

21352103527 is a deficient number, since it is larger than the sum of its proper divisors (1).

21352103527 is an equidigital number, since it uses as much as digits as its factorization.

21352103527 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12600, while the sum is 31.

Adding to 21352103527 its reverse (72530125312), we get a palindrome (93882228839).

The spelling of 21352103527 in words is "twenty-one billion, three hundred fifty-two million, one hundred three thousand, five hundred twenty-seven".