23111221142 has 8 divisors (see below), whose sum is σ = 34916233800. Its totient is φ = 11472476544.

The previous prime is 23111221141. The next prime is 23111221201. The reversal of 23111221142 is 24112211132.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23111221141) 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, 41566667 + ... + 41567222.

It is an arithmetic number, because the mean of its divisors is an integer number (4364529225).

Almost surely, 2^23111221142 is an apocalyptic number.

23111221142 is a deficient number, since it is larger than the sum of its proper divisors (11805012658).

23111221142 is a wasteful number, since it uses less digits than its factorization.

23111221142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83134030.

The product of its digits is 192, while the sum is 20.

Adding to 23111221142 its reverse (24112211132), we get a palindrome (47223432274).

The spelling of 23111221142 in words is "twenty-three billion, one hundred eleven million, two hundred twenty-one thousand, one hundred forty-two".