1211342226 has 16 divisors (see below), whose sum is σ = 2550194400. Its totient is φ = 382529088.

The previous prime is 1211342221. The next prime is 1211342227. The reversal of 1211342226 is 6222431121.

It is a junction number, because it is equal to n+sod(n) for n = 1211342196 and 1211342205.

It is not an unprimeable number, because it can be changed into a prime (1211342221) 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, 5312791 + ... + 5313018.

It is an arithmetic number, because the mean of its divisors is an integer number (159387150).

Almost surely, 2^1211342226 is an apocalyptic number.

1211342226 is an abundant number, since it is smaller than the sum of its proper divisors (1338852174).

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

1211342226 is a wasteful number, since it uses less digits than its factorization.

1211342226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10625833.

The product of its digits is 1152, while the sum is 24.

The square root of 1211342226 is about 34804.3420567032. The cubic root of 1211342226 is about 1065.9961074263.

Adding to 1211342226 its reverse (6222431121), we get a palindrome (7433773347).

The spelling of 1211342226 in words is "one billion, two hundred eleven million, three hundred forty-two thousand, two hundred twenty-six".