1253350221 has 8 divisors (see below), whose sum is σ = 1673862240. Its totient is φ = 834202512.

The previous prime is 1253350199. The next prime is 1253350237. The reversal of 1253350221 is 1220533521.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1253350221 - 2⁷ = 1253350093 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1253350191 and 1253350200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1253350261) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 338931 + ... + 342608.

It is an arithmetic number, because the mean of its divisors is an integer number (209232780).

Almost surely, 2^1253350221 is an apocalyptic number.

It is an amenable number.

1253350221 is a deficient number, since it is larger than the sum of its proper divisors (420512019).

1253350221 is an equidigital number, since it uses as much as digits as its factorization.

1253350221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 682155.

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 1253350221 is about 35402.6866353388. The cubic root of 1253350221 is about 1078.1788641587.

Adding to 1253350221 its reverse (1220533521), we get a palindrome (2473883742).

The spelling of 1253350221 in words is "one billion, two hundred fifty-three million, three hundred fifty thousand, two hundred twenty-one".