20001001222 has 8 divisors (see below), whose sum is σ = 30028705056. Its totient is φ = 9991432872.

The previous prime is 20001001201. The next prime is 20001001291. The reversal of 20001001222 is 22210010002.

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 = 20001001199 and 20001001208.

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, 4531113 + ... + 4535524.

It is an arithmetic number, because the mean of its divisors is an integer number (3753588132).

Almost surely, 2^20001001222 is an apocalyptic number.

20001001222 is a deficient number, since it is larger than the sum of its proper divisors (10027703834).

20001001222 is a wasteful number, since it uses less digits than its factorization.

20001001222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9067742.

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 20001001222 its reverse (22210010002), we get a palindrome (42211011224).

The spelling of 20001001222 in words is "twenty billion, one million, one thousand, two hundred twenty-two".