1211342210 has 16 divisors (see below), whose sum is σ = 2348140536. Its totient is φ = 447264768.

The previous prime is 1211342203. The next prime is 1211342213. The reversal of 1211342210 is 122431121.

It can be written as a sum of positive squares in 4 ways, for example, as 786858601 + 424483609 = 28051^2 + 20603^2 .

It is not an unprimeable number, because it can be changed into a prime (1211342213) 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, 4658879 + ... + 4659138.

Almost surely, 2^1211342210 is an apocalyptic number.

1211342210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1211342210 is a deficient number, since it is larger than the sum of its proper divisors (1136798326).

1211342210 is a wasteful number, since it uses less digits than its factorization.

1211342210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9318037.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 1211342210 is about 34804.3418268468. The cubic root of 1211342210 is about 1065.9961027329.

Adding to 1211342210 its reverse (122431121), we get a palindrome (1333773331).

The spelling of 1211342210 in words is "one billion, two hundred eleven million, three hundred forty-two thousand, two hundred ten".