1211422033 has 4 divisors (see below), whose sum is σ = 1211542528. Its totient is φ = 1211301540.

The previous prime is 1211422021. The next prime is 1211422063. The reversal of 1211422033 is 3302241121.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1211422033 - 2⁹ = 1211421521 is a prime.

It is a super-3 number, since 3×1211422033³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1211422033.

It is not an unprimeable number, because it can be changed into a prime (1211422063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43641 + ... + 65782.

It is an arithmetic number, because the mean of its divisors is an integer number (302885632).

Almost surely, 2^1211422033 is an apocalyptic number.

It is an amenable number.

1211422033 is a deficient number, since it is larger than the sum of its proper divisors (120495).

1211422033 is a wasteful number, since it uses less digits than its factorization.

1211422033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120494.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 1211422033 is about 34805.4885470668. The cubic root of 1211422033 is about 1066.0195172938.

Adding to 1211422033 its reverse (3302241121), we get a palindrome (4513663154).

The spelling of 1211422033 in words is "one billion, two hundred eleven million, four hundred twenty-two thousand, thirty-three".