20411121143 has 8 divisors (see below), whose sum is σ = 23895947040. Its totient is φ = 17068533120.

The previous prime is 20411121121. The next prime is 20411121187. The reversal of 20411121143 is 34112111402.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20411121143 - 2⁸ = 20411120887 is a prime.

It is a super-2 number, since 2×20411121143² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20411121193) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35559158 + ... + 35559731.

It is an arithmetic number, because the mean of its divisors is an integer number (2986993380).

Almost surely, 2^20411121143 is an apocalyptic number.

20411121143 is a deficient number, since it is larger than the sum of its proper divisors (3484825897).

20411121143 is an equidigital number, since it uses as much as digits as its factorization.

20411121143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71118937.

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 20411121143 its reverse (34112111402), we get a palindrome (54523232545).

The spelling of 20411121143 in words is "twenty billion, four hundred eleven million, one hundred twenty-one thousand, one hundred forty-three".