20101143011 has 4 divisors (see below), whose sum is σ = 20105022000. Its totient is φ = 20097264024.

The previous prime is 20101142989. The next prime is 20101143047. The reversal of 20101143011 is 11034110102.

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 20101143011 - 2²⁶ = 20034034147 is a prime.

It is a super-2 number, since 2×20101143011² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20101143311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1931711 + ... + 1942088.

It is an arithmetic number, because the mean of its divisors is an integer number (5026255500).

Almost surely, 2^20101143011 is an apocalyptic number.

20101143011 is a deficient number, since it is larger than the sum of its proper divisors (3878989).

20101143011 is an equidigital number, since it uses as much as digits as its factorization.

20101143011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3878988.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 20101143011 its reverse (11034110102), we get a palindrome (31135253113).

The spelling of 20101143011 in words is "twenty billion, one hundred one million, one hundred forty-three thousand, eleven".