1142412221 has 16 divisors (see below), whose sum is σ = 1248998400. Its totient is φ = 1041256368.

The previous prime is 1142412199. The next prime is 1142412239. The reversal of 1142412221 is 1222142411.

It is a cyclic number.

It is not a de Polignac number, because 1142412221 - 2⁶ = 1142412157 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1142412193 and 1142412202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1142412251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41846 + ... + 63528.

It is an arithmetic number, because the mean of its divisors is an integer number (78062400).

Almost surely, 2^1142412221 is an apocalyptic number.

It is an amenable number.

1142412221 is a deficient number, since it is larger than the sum of its proper divisors (106586179).

1142412221 is a wasteful number, since it uses less digits than its factorization.

1142412221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21808.

The product of its digits is 256, while the sum is 20.

The square root of 1142412221 is about 33799.5890655493. The cubic root of 1142412221 is about 1045.3802241148.

Adding to 1142412221 its reverse (1222142411), we get a palindrome (2364554632).

The spelling of 1142412221 in words is "one billion, one hundred forty-two million, four hundred twelve thousand, two hundred twenty-one".