21314210252501 has 8 divisors (see below), whose sum is σ = 22265436473664. Its totient is φ = 20365027483680.

The previous prime is 21314210252497. The next prime is 21314210252519. The reversal of 21314210252501 is 10525201241312.

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 21314210252501 - 2² = 21314210252497 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 (21314210252591) 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, 510841760 + ... + 510883481.

It is an arithmetic number, because the mean of its divisors is an integer number (2783179559208).

Almost surely, 2^{21314210252501} is an apocalyptic number.

It is an amenable number.

21314210252501 is a deficient number, since it is larger than the sum of its proper divisors (951226221163).

21314210252501 is a wasteful number, since it uses less digits than its factorization.

21314210252501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1021726171.

The product of its (nonzero) digits is 4800, while the sum is 29.

Adding to 21314210252501 its reverse (10525201241312), we get a palindrome (31839411493813).

The spelling of 21314210252501 in words is "twenty-one trillion, three hundred fourteen billion, two hundred ten million, two hundred fifty-two thousand, five hundred one".