11100020121001 has 16 divisors (see below), whose sum is σ = 12708255456000. Its totient is φ = 9497417686848.

The previous prime is 11100020120963. The next prime is 11100020121011. The reversal of 11100020121001 is 10012102000111.

It is not a de Polignac number, because 11100020121001 - 2²⁵ = 11099986566569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11100020121011) 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, 41078331 + ... + 41347663.

It is an arithmetic number, because the mean of its divisors is an integer number (794265966000).

Almost surely, 2^{11100020121001} is an apocalyptic number.

It is an amenable number.

11100020121001 is a deficient number, since it is larger than the sum of its proper divisors (1608235334999).

11100020121001 is an equidigital number, since it uses as much as digits as its factorization.

11100020121001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279768.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 11100020121001 its reverse (10012102000111), we get a palindrome (21112122121112).

The spelling of 11100020121001 in words is "eleven trillion, one hundred billion, twenty million, one hundred twenty-one thousand, one".