111102010021001 has 4 divisors (see below), whose sum is σ = 113685777695952. Its totient is φ = 108518242346052.

The previous prime is 111102010020997. The next prime is 111102010021003. The reversal of 111102010021001 is 100120010201111.

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 111102010021001 - 2² = 111102010020997 is a prime.

It is a super-2 number, since 2×111102010021001² (a number of 29 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 (111102010021003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1291883837411 + ... + 1291883837496.

It is an arithmetic number, because the mean of its divisors is an integer number (28421444423988).

Almost surely, 2^{111102010021001} is an apocalyptic number.

It is an amenable number.

111102010021001 is a deficient number, since it is larger than the sum of its proper divisors (2583767674951).

111102010021001 is an equidigital number, since it uses as much as digits as its factorization.

111102010021001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2583767674950.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 111102010021001 its reverse (100120010201111), we get a palindrome (211222020222112).

The spelling of 111102010021001 in words is "one hundred eleven trillion, one hundred two billion, ten million, twenty-one thousand, one".