452611271221 has 4 divisors (see below), whose sum is σ = 452613010444. Its totient is φ = 452609532000.

The previous prime is 452611271201. The next prime is 452611271237. The reversal of 452611271221 is 122172116254.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 122172116254 = 2 ⋅61086058127.

It can be written as a sum of positive squares in 2 ways, for example, as 67088252196 + 385523019025 = 259014^2 + 620905^2 .

It is a cyclic number.

It is not a de Polignac number, because 452611271221 - 2³⁷ = 315172317749 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 (452611271201) 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, 391710 + ... + 1028911.

It is an arithmetic number, because the mean of its divisors is an integer number (113153252611).

Almost surely, 2^452611271221 is an apocalyptic number.

It is an amenable number.

452611271221 is a deficient number, since it is larger than the sum of its proper divisors (1739223).

452611271221 is a wasteful number, since it uses less digits than its factorization.

452611271221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1739222.

The product of its digits is 13440, while the sum is 34.

Adding to 452611271221 its reverse (122172116254), we get a palindrome (574783387475).

The spelling of 452611271221 in words is "four hundred fifty-two billion, six hundred eleven million, two hundred seventy-one thousand, two hundred twenty-one".