21323425202245 has 16 divisors (see below), whose sum is σ = 25618650520320. Its totient is φ = 17038381149504.

The previous prime is 21323425202243. The next prime is 21323425202267. The reversal of 21323425202245 is 54220252432312.

It is a cyclic number.

It is not a de Polignac number, because 21323425202245 - 2¹ = 21323425202243 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21323425202243) 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, 233116939 + ... + 233208391.

It is an arithmetic number, because the mean of its divisors is an integer number (1601165657520).

Almost surely, 2^{21323425202245} is an apocalyptic number.

It is an amenable number.

21323425202245 is a deficient number, since it is larger than the sum of its proper divisors (4295225318075).

21323425202245 is an equidigital number, since it uses as much as digits as its factorization.

21323425202245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146604.

The product of its (nonzero) digits is 230400, while the sum is 37.

Adding to 21323425202245 its reverse (54220252432312), we get a palindrome (75543677634557).

The spelling of 21323425202245 in words is "twenty-one trillion, three hundred twenty-three billion, four hundred twenty-five million, two hundred two thousand, two hundred forty-five".