111221220222000 has 240 divisors, whose sum is σ = 443952741640512. Its totient is φ = 25421993164800.

The previous prime is 111221220221999. The next prime is 111221220222001. The reversal of 111221220222000 is 222022122111.

It is a happy number.

111221220222000 is a `hidden beast` number, since 1 + 1 + 1 + 221 + 220 + 2 + 220 + 0 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (111221220221999) and next prime (111221220222001).

It is a tau number, because it is divible by the number of its divisors (240).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (111221220222001) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 441228049 + ... + 441480048.

Almost surely, 2^{111221220222000} is an apocalyptic number.

111221220222000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111221220222000 is an abundant number, since it is smaller than the sum of its proper divisors (332731521418512).

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

111221220222000 is a wasteful number, since it uses less digits than its factorization.

111221220222000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 882708133 (or 882708114 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 111221220222000 its reverse (222022122111), we get a palindrome (111443242344111).

The spelling of 111221220222000 in words is "one hundred eleven trillion, two hundred twenty-one billion, two hundred twenty million, two hundred twenty-two thousand".