1211243422 has 4 divisors (see below), whose sum is σ = 1816865136. Its totient is φ = 605621710.

The previous prime is 1211243413. The next prime is 1211243459. The reversal of 1211243422 is 2243421121.

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

It is a super-2 number, since 2×1211243422² = 2934221254676540168, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1211243393 and 1211243402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 302810854 + ... + 302810857.

It is an arithmetic number, because the mean of its divisors is an integer number (454216284).

Almost surely, 2^1211243422 is an apocalyptic number.

1211243422 is a deficient number, since it is larger than the sum of its proper divisors (605621714).

1211243422 is an equidigital number, since it uses as much as digits as its factorization.

1211243422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 605621713.

The product of its digits is 768, while the sum is 22.

The square root of 1211243422 is about 34802.9226071605. The cubic root of 1211243422 is about 1065.9671237252.

Adding to 1211243422 its reverse (2243421121), we get a palindrome (3454664543).

The spelling of 1211243422 in words is "one billion, two hundred eleven million, two hundred forty-three thousand, four hundred twenty-two".