20111002222 has 16 divisors (see below), whose sum is σ = 30389302944. Its totient is φ = 9981504000.

The previous prime is 20111002211. The next prime is 20111002229. The reversal of 20111002222 is 22220011102.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20111002229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82822 + ... + 216982.

It is an arithmetic number, because the mean of its divisors is an integer number (1899331434).

Almost surely, 2^20111002222 is an apocalyptic number.

20111002222 is a deficient number, since it is larger than the sum of its proper divisors (10278300722).

20111002222 is a wasteful number, since it uses less digits than its factorization.

20111002222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134715.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 20111002222 its reverse (22220011102), we get a palindrome (42331013324).

The spelling of 20111002222 in words is "twenty billion, one hundred eleven million, two thousand, two hundred twenty-two".