22145212342 has 8 divisors (see below), whose sum is σ = 36237620232. Its totient is φ = 10066005600.

The previous prime is 22145212273. The next prime is 22145212373. The reversal of 22145212342 is 24321254122.

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

It is a self number, because there is not a number n which added to its sum of digits gives 22145212342.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 503300259 + ... + 503300302.

It is an arithmetic number, because the mean of its divisors is an integer number (4529702529).

Almost surely, 2^22145212342 is an apocalyptic number.

22145212342 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

22145212342 is a deficient number, since it is larger than the sum of its proper divisors (14092407890).

22145212342 is a wasteful number, since it uses less digits than its factorization.

22145212342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1006600574.

The product of its digits is 7680, while the sum is 28.

Adding to 22145212342 its reverse (24321254122), we get a palindrome (46466466464).

The spelling of 22145212342 in words is "twenty-two billion, one hundred forty-five million, two hundred twelve thousand, three hundred forty-two".