1211138 has 8 divisors (see below), whose sum is σ = 1859088. Its totient is φ = 591444.

The previous prime is 1211087. The next prime is 1211141. The reversal of 1211138 is 8311121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6956 + ... + 7127.

It is an arithmetic number, because the mean of its divisors is an integer number (232386).

2^1211138 is an apocalyptic number.

1211138 is a deficient number, since it is larger than the sum of its proper divisors (647950).

1211138 is a wasteful number, since it uses less digits than its factorization.

1211138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14128.

The product of its digits is 48, while the sum is 17.

The square root of 1211138 is about 1100.5171511612. The cubic root of 1211138 is about 106.5936196926.

Subtracting from 1211138 its sum of digits (17), we obtain a palindrome (1211121).

Adding to 1211138 its reverse (8311121), we get a palindrome (9522259).

It can be divided in two parts, 121113 and 8, that added together give a palindrome (121121).

The spelling of 1211138 in words is "one million, two hundred eleven thousand, one hundred thirty-eight".