21352251301 has 16 divisors (see below), whose sum is σ = 22137698304. Its totient is φ = 20578307904.

The previous prime is 21352251253. The next prime is 21352251307. The reversal of 21352251301 is 10315225312.

It is a cyclic number.

It is not a de Polignac number, because 21352251301 - 2⁹ = 21352250789 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21352251307) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3206091 + ... + 3212743.

It is an arithmetic number, because the mean of its divisors is an integer number (1383606144).

Almost surely, 2^21352251301 is an apocalyptic number.

It is an amenable number.

21352251301 is a deficient number, since it is larger than the sum of its proper divisors (785447003).

21352251301 is a wasteful number, since it uses less digits than its factorization.

21352251301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7500.

The product of its (nonzero) digits is 1800, while the sum is 25.

Adding to 21352251301 its reverse (10315225312), we get a palindrome (31667476613).

The spelling of 21352251301 in words is "twenty-one billion, three hundred fifty-two million, two hundred fifty-one thousand, three hundred one".