221111022101112 has 320 divisors, whose sum is σ = 765881639107200. Its totient is φ = 58594013487360.

The previous prime is 221111022101003. The next prime is 221111022101129. The reversal of 221111022101112 is 211101220111122.

It is a happy number.

221111022101112 is a `hidden beast` number, since 221 + 1 + 110 + 221 + 0 + 1 + 112 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 61033038 + ... + 64554269.

It is an arithmetic number, because the mean of its divisors is an integer number (2393380122210).

Almost surely, 2^{221111022101112} is an apocalyptic number.

221111022101112 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

221111022101112 is an abundant number, since it is smaller than the sum of its proper divisors (544770617006088).

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

221111022101112 is a wasteful number, since it uses less digits than its factorization.

221111022101112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125587368 (or 125587355 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 221111022101112 its reverse (211101220111122), we get a palindrome (432212242212234).

The spelling of 221111022101112 in words is "two hundred twenty-one trillion, one hundred eleven billion, twenty-two million, one hundred one thousand, one hundred twelve".