1135221142 has 16 divisors (see below), whose sum is σ = 1858348800. Its totient is φ = 515811240.

The previous prime is 1135221137. The next prime is 1135221169. The reversal of 1135221142 is 2411225311.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59359 + ... + 76117.

It is an arithmetic number, because the mean of its divisors is an integer number (116146800).

Almost surely, 2^1135221142 is an apocalyptic number.

1135221142 is a deficient number, since it is larger than the sum of its proper divisors (723127658).

1135221142 is a wasteful number, since it uses less digits than its factorization.

1135221142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19851.

The product of its digits is 480, while the sum is 22.

The square root of 1135221142 is about 33693.0429317389. The cubic root of 1135221142 is about 1043.1821733076.

Adding to 1135221142 its reverse (2411225311), we get a palindrome (3546446453).

The spelling of 1135221142 in words is "one billion, one hundred thirty-five million, two hundred twenty-one thousand, one hundred forty-two".