2001222200188 has 6 divisors (see below), whose sum is σ = 3502138850336. Its totient is φ = 1000611100092.

The previous prime is 2001222200179. The next prime is 2001222200189. The reversal of 2001222200188 is 8810022221002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2001222200189) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 250152775020 + ... + 250152775027.

Almost surely, 2^{2001222200188} is an apocalyptic number.

It is an amenable number.

2001222200188 is a deficient number, since it is larger than the sum of its proper divisors (1500916650148).

2001222200188 is a wasteful number, since it uses less digits than its factorization.

2001222200188 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 500305550051 (or 500305550049 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 28.

The spelling of 2001222200188 in words is "two trillion, one billion, two hundred twenty-two million, two hundred thousand, one hundred eighty-eight".