1211827252 has 24 divisors (see below), whose sum is σ = 2246965056. Its totient is φ = 569885568.

The previous prime is 1211827241. The next prime is 1211827271. The reversal of 1211827252 is 2527281121.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 111993 + ... + 122335.

It is an arithmetic number, because the mean of its divisors is an integer number (93623544).

Almost surely, 2^1211827252 is an apocalyptic number.

It is an amenable number.

1211827252 is a deficient number, since it is larger than the sum of its proper divisors (1035137804).

1211827252 is a wasteful number, since it uses less digits than its factorization.

1211827252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12087 (or 12085 counting only the distinct ones).

The product of its digits is 4480, while the sum is 31.

The square root of 1211827252 is about 34811.3092543214. The cubic root of 1211827252 is about 1066.1383647297.

The spelling of 1211827252 in words is "one billion, two hundred eleven million, eight hundred twenty-seven thousand, two hundred fifty-two".