202111222004 has 24 divisors (see below), whose sum is σ = 375172628040. Its totient is φ = 94940389376.

The previous prime is 202111221989. The next prime is 202111222031. The reversal of 202111222004 is 400222111202.

It can be written as a sum of positive squares in 4 ways, for example, as 69179520400 + 132931701604 = 263020^2 + 364598^2 .

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2630189 + ... + 2705940.

It is an arithmetic number, because the mean of its divisors is an integer number (15632192835).

Almost surely, 2^202111222004 is an apocalyptic number.

It is an amenable number.

202111222004 is a deficient number, since it is larger than the sum of its proper divisors (173061406036).

202111222004 is a wasteful number, since it uses less digits than its factorization.

202111222004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5336707 (or 5336705 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 202111222004 its reverse (400222111202), we get a palindrome (602333333206).

The spelling of 202111222004 in words is "two hundred two billion, one hundred eleven million, two hundred twenty-two thousand, four".