20012122222 has 8 divisors (see below), whose sum is σ = 30750334272. Its totient is φ = 9762010800.

The previous prime is 20012122177. The next prime is 20012122223. The reversal of 20012122222 is 22222121002.

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 = 20012122196 and 20012122205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20012122223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 122025054 + ... + 122025217.

It is an arithmetic number, because the mean of its divisors is an integer number (3843791784).

Almost surely, 2^20012122222 is an apocalyptic number.

20012122222 is a deficient number, since it is larger than the sum of its proper divisors (10738212050).

20012122222 is a wasteful number, since it uses less digits than its factorization.

20012122222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244050314.

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 20012122222 its reverse (22222121002), we get a palindrome (42234243224).

The spelling of 20012122222 in words is "twenty billion, twelve million, one hundred twenty-two thousand, two hundred twenty-two".