11100121010121 has 96 divisors (see below), whose sum is σ = 18592431189120. Its totient is φ = 5819038617600.

The previous prime is 11100121010081. The next prime is 11100121010159. The reversal of 11100121010121 is 12101012100111.

It is not a de Polignac number, because 11100121010121 - 2¹¹ = 11100121008073 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11100121010097 and 11100121010106.

It is not an unprimeable number, because it can be changed into a prime (11100121012121) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 21455631 + ... + 21966891.

It is an arithmetic number, because the mean of its divisors is an integer number (193671158220).

Almost surely, 2^{11100121010121} is an apocalyptic number.

11100121010121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11100121010121 is a deficient number, since it is larger than the sum of its proper divisors (7492310178999).

11100121010121 is a wasteful number, since it uses less digits than its factorization.

11100121010121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 511547 (or 511534 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 11100121010121 its reverse (12101012100111), we get a palindrome (23201133110232).

The spelling of 11100121010121 in words is "eleven trillion, one hundred billion, one hundred twenty-one million, ten thousand, one hundred twenty-one".