20154440222 has 8 divisors (see below), whose sum is σ = 34550468976. Its totient is φ = 8637617232.

The previous prime is 20154440203. The next prime is 20154440261. The reversal of 20154440222 is 22204445102.

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

It is a junction number, because it is equal to n+sod(n) for n = 20154440191 and 20154440200.

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, 719801423 + ... + 719801450.

It is an arithmetic number, because the mean of its divisors is an integer number (4318808622).

Almost surely, 2^20154440222 is an apocalyptic number.

20154440222 is a deficient number, since it is larger than the sum of its proper divisors (14396028754).

20154440222 is a wasteful number, since it uses less digits than its factorization.

20154440222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1439602882.

The product of its (nonzero) digits is 5120, while the sum is 26.

Adding to 20154440222 its reverse (22204445102), we get a palindrome (42358885324).

The spelling of 20154440222 in words is "twenty billion, one hundred fifty-four million, four hundred forty thousand, two hundred twenty-two".