21352615301 has 2 divisors, whose sum is σ = 21352615302. Its totient is φ = 21352615300.

The previous prime is 21352615259. The next prime is 21352615309. The reversal of 21352615301 is 10351625312.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13917864676 + 7434750625 = 117974^2 + 86225^2 .

It is a cyclic number.

It is not a de Polignac number, because 21352615301 - 2⁶ = 21352615237 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21352615309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10676307650 + 10676307651.

It is an arithmetic number, because the mean of its divisors is an integer number (10676307651).

Almost surely, 2^21352615301 is an apocalyptic number.

It is an amenable number.

21352615301 is a deficient number, since it is larger than the sum of its proper divisors (1).

21352615301 is an equidigital number, since it uses as much as digits as its factorization.

21352615301 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5400, while the sum is 29.

The spelling of 21352615301 in words is "twenty-one billion, three hundred fifty-two million, six hundred fifteen thousand, three hundred one".