111220221202101 has 24 divisors (see below), whose sum is σ = 175256704625184. Its totient is φ = 67405964480160.

The previous prime is 111220221202081. The next prime is 111220221202121. The reversal of 111220221202101 is 101202122022111.

111220221202101 is a `hidden beast` number, since 1 + 11 + 220 + 221 + 2 + 0 + 210 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (111220221202081) and next prime (111220221202121).

It is not a de Polignac number, because 111220221202101 - 2³³ = 111211631267509 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111220221202121) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 29864755 + ... + 33381791.

It is an arithmetic number, because the mean of its divisors is an integer number (7302362692716).

Almost surely, 2^{111220221202101} is an apocalyptic number.

111220221202101 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

111220221202101 is a deficient number, since it is larger than the sum of its proper divisors (64036483423083).

111220221202101 is a wasteful number, since it uses less digits than its factorization.

111220221202101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3836481 (or 3836478 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 111220221202101 its reverse (101202122022111), we get a palindrome (212422343224212).

The spelling of 111220221202101 in words is "one hundred eleven trillion, two hundred twenty billion, two hundred twenty-one million, two hundred two thousand, one hundred one".