20110012120001 has 4 divisors (see below), whose sum is σ = 20140435739604. Its totient is φ = 20079588500400.

The previous prime is 20110012119983. The next prime is 20110012120063. The reversal of 20110012120001 is 10002121001102.

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

It can be written as a sum of positive squares in 2 ways, for example, as 14933772851776 + 5176239268225 = 3864424^2 + 2275135^2 .

It is a cyclic number.

It is not a de Polignac number, because 20110012120001 - 2³⁴ = 20092832250817 is a prime.

It is a super-2 number, since 2×20110012120001² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20110012120091) 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, 15211808810 + ... + 15211810131.

It is an arithmetic number, because the mean of its divisors is an integer number (5035108934901).

Almost surely, 2^{20110012120001} is an apocalyptic number.

It is an amenable number.

20110012120001 is a deficient number, since it is larger than the sum of its proper divisors (30423619603).

20110012120001 is an equidigital number, since it uses as much as digits as its factorization.

20110012120001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30423619602.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 20110012120001 its reverse (10002121001102), we get a palindrome (30112133121103).

The spelling of 20110012120001 in words is "twenty trillion, one hundred ten billion, twelve million, one hundred twenty thousand, one".