11101112220121 has 16 divisors (see below), whose sum is σ = 13932005649408. Its totient is φ = 8592931098000.

The previous prime is 11101112220113. The next prime is 11101112220139. The reversal of 11101112220121 is 12102221110111.

It is a cyclic number.

It is not a de Polignac number, because 11101112220121 - 2³ = 11101112220113 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11101112220095 and 11101112220104.

It is not an unprimeable number, because it can be changed into a prime (11101112220421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 477373435 + ... + 477396688.

It is an arithmetic number, because the mean of its divisors is an integer number (870750353088).

Almost surely, 2^{11101112220121} is an apocalyptic number.

11101112220121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11101112220121 is a deficient number, since it is larger than the sum of its proper divisors (2830893429287).

11101112220121 is a wasteful number, since it uses less digits than its factorization.

11101112220121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 954770292.

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

Adding to 11101112220121 its reverse (12102221110111), we get a palindrome (23203333330232).

The spelling of 11101112220121 in words is "eleven trillion, one hundred one billion, one hundred twelve million, two hundred twenty thousand, one hundred twenty-one".