1125240211 has 16 divisors (see below), whose sum is σ = 1214540800. Its totient is φ = 1039052448.

The previous prime is 1125240209. The next prime is 1125240227. The reversal of 1125240211 is 1120425211.

It is a cyclic number.

It is not a de Polignac number, because 1125240211 - 2¹ = 1125240209 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is not an unprimeable number, because it can be changed into a prime (1125240241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 494785 + ... + 497053.

It is an arithmetic number, because the mean of its divisors is an integer number (75908800).

Almost surely, 2^1125240211 is an apocalyptic number.

1125240211 is a deficient number, since it is larger than the sum of its proper divisors (89300589).

1125240211 is a wasteful number, since it uses less digits than its factorization.

1125240211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2938.

The product of its (nonzero) digits is 160, while the sum is 19.

The square root of 1125240211 is about 33544.6003255367. The cubic root of 1125240211 is about 1040.1159298159.

Adding to 1125240211 its reverse (1120425211), we get a palindrome (2245665422).

The spelling of 1125240211 in words is "one billion, one hundred twenty-five million, two hundred forty thousand, two hundred eleven".