21120101222188 has 24 divisors (see below), whose sum is σ = 38937105975600. Its totient is φ = 9996118267968.

The previous prime is 21120101222153. The next prime is 21120101222189. The reversal of 21120101222188 is 88122210102112.

It is not an unprimeable number, because it can be changed into a prime (21120101222189) 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, 112964395 + ... + 113151202.

It is an arithmetic number, because the mean of its divisors is an integer number (1622379415650).

Almost surely, 2^{21120101222188} is an apocalyptic number.

It is an amenable number.

21120101222188 is a deficient number, since it is larger than the sum of its proper divisors (17817004753412).

21120101222188 is a wasteful number, since it uses less digits than its factorization.

21120101222188 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226116849 (or 226116847 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 31.

The spelling of 21120101222188 in words is "twenty-one trillion, one hundred twenty billion, one hundred one million, two hundred twenty-two thousand, one hundred eighty-eight".