10011220121011 has 4 divisors (see below), whose sum is σ = 10018225874800. Its totient is φ = 10004214367224.

The previous prime is 10011220120949. The next prime is 10011220121017. The reversal of 10011220121011 is 11012102211001.

It is a happy number.

10011220121011 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 10011220121011 - 2²⁷ = 10011085903283 is a prime.

It is a super-2 number, since 2×10011220121011² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10011220120982 and 10011220121000.

It is not an unprimeable number, because it can be changed into a prime (10011220121017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3502874751 + ... + 3502877608.

It is an arithmetic number, because the mean of its divisors is an integer number (2504556468700).

Almost surely, 2^{10011220121011} is an apocalyptic number.

10011220121011 is a deficient number, since it is larger than the sum of its proper divisors (7005753789).

10011220121011 is an equidigital number, since it uses as much as digits as its factorization.

10011220121011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7005753788.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 10011220121011 its reverse (11012102211001), we get a palindrome (21023322332012).

It can be divided in two parts, 10011 and 220121011, that added together give a palindrome (220131022).

The spelling of 10011220121011 in words is "ten trillion, eleven billion, two hundred twenty million, one hundred twenty-one thousand, eleven".