1211342222 has 4 divisors (see below), whose sum is σ = 1817013336. Its totient is φ = 605671110.

The previous prime is 1211342221. The next prime is 1211342227. The reversal of 1211342222 is 2222431121.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 1211342194 and 1211342203.

It is a congruent number.

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 as a sum of consecutive naturals, namely, 302835554 + ... + 302835557.

It is an arithmetic number, because the mean of its divisors is an integer number (454253334).

Almost surely, 2^1211342222 is an apocalyptic number.

1211342222 is a deficient number, since it is larger than the sum of its proper divisors (605671114).

1211342222 is an equidigital number, since it uses as much as digits as its factorization.

1211342222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 605671113.

The product of its digits is 384, while the sum is 20.

The square root of 1211342222 is about 34804.3419992391. The cubic root of 1211342222 is about 1065.9961062529.

Adding to 1211342222 its reverse (2222431121), we get a palindrome (3433773343).

The spelling of 1211342222 in words is "one billion, two hundred eleven million, three hundred forty-two thousand, two hundred twenty-two".