1211254252 has 48 divisors (see below), whose sum is σ = 2394030240. Its totient is φ = 532320768.

The previous prime is 1211254241. The next prime is 1211254309. The reversal of 1211254252 is 2524521121.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 104583 + ... + 115585.

It is an arithmetic number, because the mean of its divisors is an integer number (49875630).

Almost surely, 2^1211254252 is an apocalyptic number.

It is an amenable number.

1211254252 is a deficient number, since it is larger than the sum of its proper divisors (1182775988).

1211254252 is a wasteful number, since it uses less digits than its factorization.

1211254252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11122 (or 11120 counting only the distinct ones).

The product of its digits is 1600, while the sum is 25.

The square root of 1211254252 is about 34803.0781971940. The cubic root of 1211254252 is about 1065.9703007330.

Adding to 1211254252 its reverse (2524521121), we get a palindrome (3735775373).

The spelling of 1211254252 in words is "one billion, two hundred eleven million, two hundred fifty-four thousand, two hundred fifty-two".