1354272221 has 4 divisors (see below), whose sum is σ = 1354413852. Its totient is φ = 1354130592.

The previous prime is 1354272217. The next prime is 1354272233. The reversal of 1354272221 is 1222724531.

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 424936996 + 929335225 = 20614^2 + 30485^2 .

It is a cyclic number.

It is not a de Polignac number, because 1354272221 - 2² = 1354272217 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 (1354272721) 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, 55346 + ... + 75971.

It is an arithmetic number, because the mean of its divisors is an integer number (338603463).

Almost surely, 2^1354272221 is an apocalyptic number.

It is an amenable number.

1354272221 is a deficient number, since it is larger than the sum of its proper divisors (141631).

1354272221 is a wasteful number, since it uses less digits than its factorization.

1354272221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141630.

The product of its digits is 6720, while the sum is 29.

The square root of 1354272221 is about 36800.4377827221. The cubic root of 1354272221 is about 1106.3740735384.

Adding to 1354272221 its reverse (1222724531), we get a palindrome (2576996752).

The spelling of 1354272221 in words is "one billion, three hundred fifty-four million, two hundred seventy-two thousand, two hundred twenty-one".