1453222121 has 4 divisors (see below), whose sum is σ = 1565008452. Its totient is φ = 1341435792.

The previous prime is 1453222091. The next prime is 1453222189. The reversal of 1453222121 is 1212223541.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 442681600 + 1010540521 = 21040^2 + 31789^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1453222121 is a prime.

It is a super-2 number, since 2×1453222121² = 4223709065927477282, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1453225121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55893146 + ... + 55893171.

It is an arithmetic number, because the mean of its divisors is an integer number (391252113).

Almost surely, 2^1453222121 is an apocalyptic number.

It is an amenable number.

1453222121 is a deficient number, since it is larger than the sum of its proper divisors (111786331).

1453222121 is a wasteful number, since it uses less digits than its factorization.

1453222121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111786330.

The product of its digits is 960, while the sum is 23.

The square root of 1453222121 is about 38121.1505728775. The cubic root of 1453222121 is about 1132.6889576800.

Adding to 1453222121 its reverse (1212223541), we get a palindrome (2665445662).

The spelling of 1453222121 in words is "one billion, four hundred fifty-three million, two hundred twenty-two thousand, one hundred twenty-one".