4252454366221 has 4 divisors (see below), whose sum is σ = 4252706260992. Its totient is φ = 4252202471452.

The previous prime is 4252454366203. The next prime is 4252454366249. The reversal of 4252454366221 is 1226634542524.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 4252454366221 - 2⁵ = 4252454366189 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 (4252454366261) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 125922061 + ... + 125955826.

It is an arithmetic number, because the mean of its divisors is an integer number (1063176565248).

Almost surely, 2^{4252454366221} is an apocalyptic number.

It is an amenable number.

4252454366221 is a deficient number, since it is larger than the sum of its proper divisors (251894771).

4252454366221 is a wasteful number, since it uses less digits than its factorization.

4252454366221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251894770.

The product of its digits is 2764800, while the sum is 46.

The spelling of 4252454366221 in words is "four trillion, two hundred fifty-two billion, four hundred fifty-four million, three hundred sixty-six thousand, two hundred twenty-one".