20506502222 has 8 divisors (see below), whose sum is σ = 30761090256. Its totient is φ = 10252805472.

The previous prime is 20506502209. The next prime is 20506502239. The reversal of 20506502222 is 22220560502.

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 = 20506502191 and 20506502200.

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, 161978 + ... + 259325.

It is an arithmetic number, because the mean of its divisors is an integer number (3845136282).

Almost surely, 2^20506502222 is an apocalyptic number.

20506502222 is a deficient number, since it is larger than the sum of its proper divisors (10254588034).

20506502222 is a wasteful number, since it uses less digits than its factorization.

20506502222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 445642.

The product of its (nonzero) digits is 4800, while the sum is 26.

The spelling of 20506502222 in words is "twenty billion, five hundred six million, five hundred two thousand, two hundred twenty-two".