1211342211 has 12 divisors (see below), whose sum is σ = 1750527792. Its totient is φ = 807187056.

The previous prime is 1211342203. The next prime is 1211342213. The reversal of 1211342211 is 1122431121.

It is not a de Polignac number, because 1211342211 - 2³ = 1211342203 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1211342213) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9951 + ... + 50216.

It is an arithmetic number, because the mean of its divisors is an integer number (145877316).

Almost surely, 2^1211342211 is an apocalyptic number.

1211342211 is a deficient number, since it is larger than the sum of its proper divisors (539185581).

1211342211 is a wasteful number, since it uses less digits than its factorization.

1211342211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62410 (or 62407 counting only the distinct ones).

The product of its digits is 96, while the sum is 18.

The square root of 1211342211 is about 34804.3418412129. The cubic root of 1211342211 is about 1065.9961030262.

Adding to 1211342211 its reverse (1122431121), we get a palindrome (2333773332).

The spelling of 1211342211 in words is "one billion, two hundred eleven million, three hundred forty-two thousand, two hundred eleven".