1261211 has 8 divisors (see below), whose sum is σ = 1471200. Its totient is φ = 1080744.

The previous prime is 1261199. The next prime is 1261217. The reversal of 1261211 is 1121621.

It is not a de Polignac number, because 1261211 - 2¹⁸ = 999067 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1261217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1496 + ... + 2181.

It is an arithmetic number, because the mean of its divisors is an integer number (183900).

2^1261211 is an apocalyptic number.

1261211 is a deficient number, since it is larger than the sum of its proper divisors (209989).

1261211 is an frugal number, since it uses more digits than its factorization.

1261211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3698 (or 3684 counting only the distinct ones).

The product of its digits is 24, while the sum is 14.

The square root of 1261211 is about 1123.0365087565. The cubic root of 1261211 is about 108.0428213824.

Adding to 1261211 its reverse (1121621), we get a palindrome (2382832).

The spelling of 1261211 in words is "one million, two hundred sixty-one thousand, two hundred eleven".