22233142 has 4 divisors (see below), whose sum is σ = 33349716. Its totient is φ = 11116570.

The previous prime is 22233139. The next prime is 22233143. The reversal of 22233142 is 24133222.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24133222 = 2 ⋅12066611.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22233143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5558284 + ... + 5558287.

It is an arithmetic number, because the mean of its divisors is an integer number (8337429).

Almost surely, 2^22233142 is an apocalyptic number.

22233142 is a deficient number, since it is larger than the sum of its proper divisors (11116574).

22233142 is a wasteful number, since it uses less digits than its factorization.

22233142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11116573.

The product of its digits is 576, while the sum is 19.

The square root of 22233142 is about 4715.2032829985. The cubic root of 22233142 is about 281.1902647128.

Adding to 22233142 its reverse (24133222), we get a palindrome (46366364).

The spelling of 22233142 in words is "twenty-two million, two hundred thirty-three thousand, one hundred forty-two".