20010120101011 has 4 divisors (see below), whose sum is σ = 20010767059624. Its totient is φ = 20009473142400.

The previous prime is 20010120101003. The next prime is 20010120101029. The reversal of 20010120101011 is 11010102101002.

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 20010120101011 - 2³ = 20010120101003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20014120101011) 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, 323432910 + ... + 323494771.

It is an arithmetic number, because the mean of its divisors is an integer number (5002691764906).

Almost surely, 2^{20010120101011} is an apocalyptic number.

20010120101011 is a deficient number, since it is larger than the sum of its proper divisors (646958613).

20010120101011 is an equidigital number, since it uses as much as digits as its factorization.

20010120101011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 646958612.

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

Adding to 20010120101011 its reverse (11010102101002), we get a palindrome (31020222202013).

Subtracting from 20010120101011 its reverse (11010102101002), we obtain a square (9000018000009 = 3000003²).

It can be divided in two parts, 20010 and 120101011, that added together give a palindrome (120121021).

The spelling of 20010120101011 in words is "twenty trillion, ten billion, one hundred twenty million, one hundred one thousand, eleven".