22221111211120 has 40 divisors (see below), whose sum is σ = 51665926785120. Its totient is φ = 8888127371520.

The previous prime is 22221111211109. The next prime is 22221111211141. The reversal of 22221111211120 is 2111211112222.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

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, 2692116 + ... + 7189555.

It is an arithmetic number, because the mean of its divisors is an integer number (1291648169628).

Almost surely, 2^{22221111211120} is an apocalyptic number.

22221111211120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22221111211120 is an abundant number, since it is smaller than the sum of its proper divisors (29444815574000).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22221111211120 is a wasteful number, since it uses less digits than its factorization.

22221111211120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9909793 (or 9909787 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 22221111211120 its reverse (2111211112222), we get a palindrome (24332322323342).

The spelling of 22221111211120 in words is "twenty-two trillion, two hundred twenty-one billion, one hundred eleven million, two hundred eleven thousand, one hundred twenty".