111201220001 has 8 divisors (see below), whose sum is σ = 111883140864. Its totient is φ = 110521262560.

The previous prime is 111201219989. The next prime is 111201220033. The reversal of 111201220001 is 100022102111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111201220001 is a prime.

It is a super-2 number, since 2×111201220001² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (111201220051) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 377156 + ... + 603861.

It is an arithmetic number, because the mean of its divisors is an integer number (13985392608).

Almost surely, 2^111201220001 is an apocalyptic number.

It is an amenable number.

111201220001 is a deficient number, since it is larger than the sum of its proper divisors (681920863).

111201220001 is an equidigital number, since it uses as much as digits as its factorization.

111201220001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 981711.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 111201220001 its reverse (100022102111), we get a palindrome (211223322112).

The spelling of 111201220001 in words is "one hundred eleven billion, two hundred one million, two hundred twenty thousand, one".