221122111111120 has 40 divisors (see below), whose sum is σ = 514120981428000. Its totient is φ = 88446767352960.

The previous prime is 221122111111073. The next prime is 221122111111151. The reversal of 221122111111120 is 21111111221122.

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 polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29024370 + ... + 35842129.

It is an arithmetic number, because the mean of its divisors is an integer number (12853024535700).

Almost surely, 2^{221122111111120} is an apocalyptic number.

221122111111120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221122111111120 is an abundant number, since it is smaller than the sum of its proper divisors (292998870316880).

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

221122111111120 is a wasteful number, since it uses less digits than its factorization.

221122111111120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64909123 (or 64909117 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 19.

Adding to 221122111111120 its reverse (21111111221122), we get a palindrome (242233222332242).

The spelling of 221122111111120 in words is "two hundred twenty-one trillion, one hundred twenty-two billion, one hundred eleven million, one hundred eleven thousand, one hundred twenty".