112001220221 has 4 divisors (see below), whose sum is σ = 122183149344. Its totient is φ = 101819291100.

The previous prime is 112001220209. The next prime is 112001220269. The reversal of 112001220221 is 122022100211.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-112001220221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 112001220196 and 112001220205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112001220271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5090964545 + ... + 5090964566.

It is an arithmetic number, because the mean of its divisors is an integer number (30545787336).

Almost surely, 2^112001220221 is an apocalyptic number.

112001220221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

112001220221 is a deficient number, since it is larger than the sum of its proper divisors (10181929123).

112001220221 is a wasteful number, since it uses less digits than its factorization.

112001220221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10181929122.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 112001220221 its reverse (122022100211), we get a palindrome (234023320432).

The spelling of 112001220221 in words is "one hundred twelve billion, one million, two hundred twenty thousand, two hundred twenty-one".