1211888 has 10 divisors (see below), whose sum is σ = 2348064. Its totient is φ = 605936.

The previous prime is 1211863. The next prime is 1211897. The reversal of 1211888 is 8881121.

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 1211888.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37856 + ... + 37887.

2^1211888 is an apocalyptic number.

It is an amenable number.

1211888 is a deficient number, since it is larger than the sum of its proper divisors (1136176).

1211888 is an equidigital number, since it uses as much as digits as its factorization.

1211888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75751 (or 75745 counting only the distinct ones).

The product of its digits is 1024, while the sum is 29.

The square root of 1211888 is about 1100.8578473173. The cubic root of 1211888 is about 106.6156179340.

The spelling of 1211888 in words is "one million, two hundred eleven thousand, eight hundred eighty-eight".