22212542 has 16 divisors (see below), whose sum is σ = 36514800. Its totient is φ = 10050240.

The previous prime is 22212527. The next prime is 22212569. The reversal of 22212542 is 24521222.

It is a congruent number.

It is an unprimeable number.

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, 2834 + ... + 7242.

It is an arithmetic number, because the mean of its divisors is an integer number (2282175).

Almost surely, 2^22212542 is an apocalyptic number.

22212542 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

22212542 is a deficient number, since it is larger than the sum of its proper divisors (14302258).

22212542 is a wasteful number, since it uses less digits than its factorization.

22212542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4651.

The product of its digits is 640, while the sum is 20.

The square root of 22212542 is about 4713.0183534546. The cubic root of 22212542 is about 281.1033927600.

Adding to 22212542 its reverse (24521222), we get a palindrome (46733764).

The spelling of 22212542 in words is "twenty-two million, two hundred twelve thousand, five hundred forty-two".