111221010102001 has 8 divisors (see below), whose sum is σ = 112471331535360. Its totient is φ = 109970703050208.

The previous prime is 111221010101959. The next prime is 111221010102019. The reversal of 111221010102001 is 100201010122111.

It is a happy number.

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-111221010102001 is a prime.

It is a super-2 number, since 2×111221010102001² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (111221010162001) 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, 12354180 + ... + 19366666.

It is an arithmetic number, because the mean of its divisors is an integer number (14058916441920).

Almost surely, 2^{111221010102001} is an apocalyptic number.

It is an amenable number.

111221010102001 is a deficient number, since it is larger than the sum of its proper divisors (1250321433359).

111221010102001 is an equidigital number, since it uses as much as digits as its factorization.

111221010102001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7190783.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 111221010102001 its reverse (100201010122111), we get a palindrome (211422020224112).

The spelling of 111221010102001 in words is "one hundred eleven trillion, two hundred twenty-one billion, ten million, one hundred two thousand, one".