20155204222 has 8 divisors (see below), whose sum is σ = 30248715672. Its totient is φ = 10072299000.

The previous prime is 20155204219. The next prime is 20155204291. The reversal of 20155204222 is 22240255102.

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

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, 2646804 + ... + 2654407.

It is an arithmetic number, because the mean of its divisors is an integer number (3781089459).

Almost surely, 2^20155204222 is an apocalyptic number.

20155204222 is a deficient number, since it is larger than the sum of its proper divisors (10093511450).

20155204222 is a wasteful number, since it uses less digits than its factorization.

20155204222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5303114.

The product of its (nonzero) digits is 3200, while the sum is 25.

Adding to 20155204222 its reverse (22240255102), we get a palindrome (42395459324).

The spelling of 20155204222 in words is "twenty billion, one hundred fifty-five million, two hundred four thousand, two hundred twenty-two".