1211560 has 32 divisors (see below), whose sum is σ = 3116160. Its totient is φ = 415296.

The previous prime is 1211549. The next prime is 1211563. The reversal of 1211560 is 651121.

It is a happy number.

It is a plaindrome in base 13.

It is a zygodrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (1211563) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1884 + ... + 2443.

It is an arithmetic number, because the mean of its divisors is an integer number (97380).

2^1211560 is an apocalyptic number.

1211560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1211560 is an abundant number, since it is smaller than the sum of its proper divisors (1904600).

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

1211560 is a wasteful number, since it uses less digits than its factorization.

1211560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4345 (or 4341 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 16.

The square root of 1211560 is about 1100.7088625063. The cubic root of 1211560 is about 106.6059984868.

Adding to 1211560 its reverse (651121), we get a palindrome (1862681).

It can be divided in two parts, 1211 and 560, that added together give a palindrome (1771).

The spelling of 1211560 in words is "one million, two hundred eleven thousand, five hundred sixty".