110121111011001 has 4 divisors (see below), whose sum is σ = 146828148014672. Its totient is φ = 73414074007332.

The previous prime is 110121111010961. The next prime is 110121111011027. The reversal of 110121111011001 is 100110111121011.

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 not a de Polignac number, because 110121111011001 - 2²⁵ = 110121077456569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (110121111011801) 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, 18353518501831 + ... + 18353518501836.

It is an arithmetic number, because the mean of its divisors is an integer number (36707037003668).

Almost surely, 2^{110121111011001} is an apocalyptic number.

It is an amenable number.

110121111011001 is a deficient number, since it is larger than the sum of its proper divisors (36707037003671).

110121111011001 is an equidigital number, since it uses as much as digits as its factorization.

110121111011001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36707037003670.

The product of its (nonzero) digits is 2, while the sum is 12.

Adding to 110121111011001 its reverse (100110111121011), we get a palindrome (210231222132012).

It can be divided in two parts, 11012111 and 1011001, that multiplied together give a palindrome (11133255233111).

The spelling of 110121111011001 in words is "one hundred ten trillion, one hundred twenty-one billion, one hundred eleven million, eleven thousand, one".