2331221142 has 16 divisors (see below), whose sum is σ = 4812844032. Its totient is φ = 752006760.

The previous prime is 2331221117. The next prime is 2331221147. The reversal of 2331221142 is 2411221332.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2331221147) 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 7 ways as a sum of consecutive naturals, for example, 6266538 + ... + 6266909.

It is an arithmetic number, because the mean of its divisors is an integer number (300802752).

Almost surely, 2^2331221142 is an apocalyptic number.

2331221142 is an abundant number, since it is smaller than the sum of its proper divisors (2481622890).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2331221142 is a wasteful number, since it uses less digits than its factorization.

2331221142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12533483.

The product of its digits is 576, while the sum is 21.

The square root of 2331221142 is about 48282.7209465250. The cubic root of 2331221142 is about 1325.9520660882.

Adding to 2331221142 its reverse (2411221332), we get a palindrome (4742442474).

The spelling of 2331221142 in words is "two billion, three hundred thirty-one million, two hundred twenty-one thousand, one hundred forty-two".