21523114301 has 8 divisors (see below), whose sum is σ = 23181049080. Its totient is φ = 19865509632.

The previous prime is 21523114297. The next prime is 21523114309. The reversal of 21523114301 is 10341132512.

It can be written as a sum of positive squares in 4 ways, for example, as 163584100 + 21359530201 = 12790^2 + 146149^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21523114301 - 2² = 21523114297 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 (21523114309) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62321 + ... + 216633.

It is an arithmetic number, because the mean of its divisors is an integer number (2897631135).

Almost surely, 2^21523114301 is an apocalyptic number.

It is an amenable number.

21523114301 is a deficient number, since it is larger than the sum of its proper divisors (1657934779).

21523114301 is a wasteful number, since it uses less digits than its factorization.

21523114301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165055.

The product of its (nonzero) digits is 720, while the sum is 23.

Adding to 21523114301 its reverse (10341132512), we get a palindrome (31864246813).

The spelling of 21523114301 in words is "twenty-one billion, five hundred twenty-three million, one hundred fourteen thousand, three hundred one".