11000020010121 has 16 divisors (see below), whose sum is σ = 16339324177600. Its totient is φ = 7313997466944.

The previous prime is 11000020010117. The next prime is 11000020010141. The reversal of 11000020010121 is 12101002000011.

It is a happy number.

It is not a de Polignac number, because 11000020010121 - 2² = 11000020010117 is a prime.

It is a super-3 number, since 3×11000020010121³ (a number of 40 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11000020010101) 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, 537467536 + ... + 537488001.

It is an arithmetic number, because the mean of its divisors is an integer number (1021207761100).

Almost surely, 2^{11000020010121} is an apocalyptic number.

It is an amenable number.

11000020010121 is a deficient number, since it is larger than the sum of its proper divisors (5339304167479).

11000020010121 is a wasteful number, since it uses less digits than its factorization.

11000020010121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1074955925 (or 1074955919 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 11000020010121 its reverse (12101002000011), we get a palindrome (23101022010132).

The spelling of 11000020010121 in words is "eleven trillion, twenty million, ten thousand, one hundred twenty-one".