111120020001001 has 4 divisors (see below), whose sum is σ = 121221840001104. Its totient is φ = 101018200000900.

The previous prime is 111120020000923. The next prime is 111120020001019. The reversal of 111120020001001 is 100100020021111.

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 not a de Polignac number, because 111120020001001 - 2²⁷ = 111119885783273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111120020001091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5050910000035 + ... + 5050910000056.

It is an arithmetic number, because the mean of its divisors is an integer number (30305460000276).

Almost surely, 2^{111120020001001} is an apocalyptic number.

111120020001001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

111120020001001 is a deficient number, since it is larger than the sum of its proper divisors (10101820000103).

111120020001001 is a wasteful number, since it uses less digits than its factorization.

111120020001001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10101820000102.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 111120020001001 its reverse (100100020021111), we get a palindrome (211220040022112).

The spelling of 111120020001001 in words is "one hundred eleven trillion, one hundred twenty billion, twenty million, one thousand, one".