20202222556 has 24 divisors (see below), whose sum is σ = 36582714000. Its totient is φ = 9750203904.

The previous prime is 20202222517. The next prime is 20202222559. The reversal of 20202222556 is 65522220202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20202222559) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 457875 + ... + 500053.

It is an arithmetic number, because the mean of its divisors is an integer number (1524279750).

Almost surely, 2^20202222556 is an apocalyptic number.

It is an amenable number.

20202222556 is a deficient number, since it is larger than the sum of its proper divisors (16380491444).

20202222556 is a wasteful number, since it uses less digits than its factorization.

20202222556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46341 (or 46339 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 28.

Adding to 20202222556 its reverse (65522220202), we get a palindrome (85724442758).

The spelling of 20202222556 in words is "twenty billion, two hundred two million, two hundred twenty-two thousand, five hundred fifty-six".