1243052211 has 4 divisors (see below), whose sum is σ = 1657402952. Its totient is φ = 828701472.

The previous prime is 1243052197. The next prime is 1243052233. The reversal of 1243052211 is 1122503421.

1243052211 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 1243052211 - 2⁹ = 1243051699 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1243052611) 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, 207175366 + ... + 207175371.

It is an arithmetic number, because the mean of its divisors is an integer number (414350738).

Almost surely, 2^1243052211 is an apocalyptic number.

1243052211 is a deficient number, since it is larger than the sum of its proper divisors (414350741).

1243052211 is an equidigital number, since it uses as much as digits as its factorization.

1243052211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 414350740.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 1243052211 is about 35256.9455710503. The cubic root of 1243052211 is about 1075.2178281496.

Adding to 1243052211 its reverse (1122503421), we get a palindrome (2365555632).

The spelling of 1243052211 in words is "one billion, two hundred forty-three million, fifty-two thousand, two hundred eleven".