1211442341 has 4 divisors (see below), whose sum is σ = 1211604684. Its totient is φ = 1211280000.

The previous prime is 1211442329. The next prime is 1211442367. The reversal of 1211442341 is 1432441121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1432441121 = 7237 ⋅197933.

It can be written as a sum of positive squares in 2 ways, for example, as 832322500 + 379119841 = 28850^2 + 19471^2 .

It is a cyclic number.

It is not a de Polignac number, because 1211442341 - 2¹⁰ = 1211441317 is a prime.

It is a super-3 number, since 3×1211442341³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211462341) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69410 + ... + 85091.

It is an arithmetic number, because the mean of its divisors is an integer number (302901171).

Almost surely, 2^1211442341 is an apocalyptic number.

It is an amenable number.

1211442341 is a deficient number, since it is larger than the sum of its proper divisors (162343).

1211442341 is an equidigital number, since it uses as much as digits as its factorization.

1211442341 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162342.

The product of its digits is 768, while the sum is 23.

The square root of 1211442341 is about 34805.7802814418. The cubic root of 1211442341 is about 1066.0254740958.

Adding to 1211442341 its reverse (1432441121), we get a palindrome (2643883462).

The spelling of 1211442341 in words is "one billion, two hundred eleven million, four hundred forty-two thousand, three hundred forty-one".