11011112121001 has 8 divisors (see below), whose sum is σ = 11342803190400. Its totient is φ = 10682858265072.

The previous prime is 11011112120927. The next prime is 11011112121127. The reversal of 11011112121001 is 10012121111011.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11011112121001 - 2¹⁵ = 11011112088233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11011112121901) 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, 859296865 + ... + 859309678.

It is an arithmetic number, because the mean of its divisors is an integer number (1417850398800).

Almost surely, 2^{11011112121001} is an apocalyptic number.

It is an amenable number.

11011112121001 is a deficient number, since it is larger than the sum of its proper divisors (331691069399).

11011112121001 is a wasteful number, since it uses less digits than its factorization.

11011112121001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1718606735.

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

Adding to 11011112121001 its reverse (10012121111011), we get a palindrome (21023233232012).

It can be divided in two parts, 110 and 11112121001, that added together give a palindrome (11112121111).

The spelling of 11011112121001 in words is "eleven trillion, eleven billion, one hundred twelve million, one hundred twenty-one thousand, one".