1125221203 has 8 divisors (see below), whose sum is σ = 1178827776. Its totient is φ = 1072005000.

The previous prime is 1125221183. The next prime is 1125221221. The reversal of 1125221203 is 3021225211.

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-1125221203 is a prime.

It is a super-2 number, since 2×1125221203² = 2532245511361534418, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1125227203) 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, 91683 + ... + 103228.

It is an arithmetic number, because the mean of its divisors is an integer number (147353472).

Almost surely, 2^1125221203 is an apocalyptic number.

1125221203 is a deficient number, since it is larger than the sum of its proper divisors (53606573).

1125221203 is a wasteful number, since it uses less digits than its factorization.

1125221203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195185.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 1125221203 is about 33544.3170000523. The cubic root of 1125221203 is about 1040.1100731005.

Adding to 1125221203 its reverse (3021225211), we get a palindrome (4146446414).

The spelling of 1125221203 in words is "one billion, one hundred twenty-five million, two hundred twenty-one thousand, two hundred three".