1125053221 has 8 divisors (see below), whose sum is σ = 1137913344. Its totient is φ = 1112266080.

The previous prime is 1125053203. The next prime is 1125053233. The reversal of 1125053221 is 1223505211.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1125053221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1125053192 and 1125053201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1125053621) 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, 13065 + ... + 49201.

It is an arithmetic number, because the mean of its divisors is an integer number (142239168).

Almost surely, 2^1125053221 is an apocalyptic number.

It is an amenable number.

1125053221 is a deficient number, since it is larger than the sum of its proper divisors (12860123).

1125053221 is a wasteful number, since it uses less digits than its factorization.

1125053221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36491.

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 1125053221 is about 33541.8130249395. The cubic root of 1125053221 is about 1040.0583118808.

Adding to 1125053221 its reverse (1223505211), we get a palindrome (2348558432).

The spelling of 1125053221 in words is "one billion, one hundred twenty-five million, fifty-three thousand, two hundred twenty-one".