1211360 has 48 divisors (see below), whose sum is σ = 2930256. Its totient is φ = 473088.

The previous prime is 1211339. The next prime is 1211381. The reversal of 1211360 is 631121.

1211360 = T₂₅₉ + T₂₆₀ + ... + T₂₉₀.

It is an interprime number because it is at equal distance from previous prime (1211339) and next prime (1211381).

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, 10664 + ... + 10776.

It is an arithmetic number, because the mean of its divisors is an integer number (61047).

2^1211360 is an apocalyptic number.

1211360 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1211360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1465128).

1211360 is an abundant number, since it is smaller than the sum of its proper divisors (1718896).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1211360 is a wasteful number, since it uses less digits than its factorization.

1211360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195 (or 187 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 1211360 is about 1100.6180082118. The cubic root of 1211360 is about 106.6001321181.

Subtracting from 1211360 its sum of digits (14), we obtain a triangular number (1211346 = T₁₅₅₆).

Adding to 1211360 its reverse (631121), we get a palindrome (1842481).

The spelling of 1211360 in words is "one million, two hundred eleven thousand, three hundred sixty".