20211103012231 has 4 divisors (see below), whose sum is σ = 20365386241464. Its totient is φ = 20056819783000.

The previous prime is 20211103012229. The next prime is 20211103012249. The reversal of 20211103012231 is 13221030111202.

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 20211103012231 - 2¹ = 20211103012229 is a prime.

It is a super-2 number, since 2×20211103012231² (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 = 20211103012199 and 20211103012208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20211103012271) 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, 77141614420 + ... + 77141614681.

It is an arithmetic number, because the mean of its divisors is an integer number (5091346560366).

Almost surely, 2^{20211103012231} is an apocalyptic number.

20211103012231 is a deficient number, since it is larger than the sum of its proper divisors (154283229233).

20211103012231 is a wasteful number, since it uses less digits than its factorization.

20211103012231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154283229232.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 20211103012231 its reverse (13221030111202), we get a palindrome (33432133123433).

The spelling of 20211103012231 in words is "twenty trillion, two hundred eleven billion, one hundred three million, twelve thousand, two hundred thirty-one".