111201011211001 has 16 divisors (see below), whose sum is σ = 118277832052800. Its totient is φ = 104246923511808.

The previous prime is 111201011210929. The next prime is 111201011211007. The reversal of 111201011211001 is 100112110102111.

It is not a de Polignac number, because 111201011211001 - 2¹⁹ = 111201010686713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111201011211007) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8103345 + ... + 16972513.

It is an arithmetic number, because the mean of its divisors is an integer number (7392364503300).

Almost surely, 2^{111201011211001} is an apocalyptic number.

It is an amenable number.

111201011211001 is a deficient number, since it is larger than the sum of its proper divisors (7076820841799).

111201011211001 is an equidigital number, since it uses as much as digits as its factorization.

111201011211001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8876088.

The product of its (nonzero) digits is 4, while the sum is 13.

Adding to 111201011211001 its reverse (100112110102111), we get a palindrome (211313121313112).

The spelling of 111201011211001 in words is "one hundred eleven trillion, two hundred one billion, eleven million, two hundred eleven thousand, one".