20145304222 has 4 divisors (see below), whose sum is σ = 30217956336. Its totient is φ = 10072652110.

The previous prime is 20145304219. The next prime is 20145304301. The reversal of 20145304222 is 22240354102.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5036326054 + ... + 5036326057.

It is an arithmetic number, because the mean of its divisors is an integer number (7554489084).

Almost surely, 2^20145304222 is an apocalyptic number.

20145304222 is a deficient number, since it is larger than the sum of its proper divisors (10072652114).

20145304222 is a wasteful number, since it uses less digits than its factorization.

20145304222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10072652113.

The product of its (nonzero) digits is 3840, while the sum is 25.

Adding to 20145304222 its reverse (22240354102), we get a palindrome (42385658324).

The spelling of 20145304222 in words is "twenty billion, one hundred forty-five million, three hundred four thousand, two hundred twenty-two".