11121010220121 has 8 divisors (see below), whose sum is σ = 14828061348960. Its totient is φ = 7413982952352.

The previous prime is 11121010220051. The next prime is 11121010220123. The reversal of 11121010220121 is 12102201012111.

It is a happy number.

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

It is not a de Polignac number, because 11121010220121 - 2²² = 11121006025817 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11121010220121.

It is not an unprimeable number, because it can be changed into a prime (11121010220123) 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, 4847860 + ... + 6763413.

It is an arithmetic number, because the mean of its divisors is an integer number (1853507668620).

Almost surely, 2^{11121010220121} is an apocalyptic number.

It is an amenable number.

11121010220121 is a deficient number, since it is larger than the sum of its proper divisors (3707051128839).

11121010220121 is a wasteful number, since it uses less digits than its factorization.

11121010220121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11930535.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 11121010220121 its reverse (12102201012111), we get a palindrome (23223211232232).

The spelling of 11121010220121 in words is "eleven trillion, one hundred twenty-one billion, ten million, two hundred twenty thousand, one hundred twenty-one".