20401101043 has 2 divisors, whose sum is σ = 20401101044. Its totient is φ = 20401101042.

The previous prime is 20401101031. The next prime is 20401101067. The reversal of 20401101043 is 34010110402.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20401101043 - 2⁵ = 20401101011 is a prime.

It is not a weakly prime, because it can be changed into another prime (20401101143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10200550521 + 10200550522.

It is an arithmetic number, because the mean of its divisors is an integer number (10200550522).

Almost surely, 2^20401101043 is an apocalyptic number.

20401101043 is a deficient number, since it is larger than the sum of its proper divisors (1).

20401101043 is an equidigital number, since it uses as much as digits as its factorization.

20401101043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 20401101043 its reverse (34010110402), we get a palindrome (54411211445).

The spelling of 20401101043 in words is "twenty billion, four hundred one million, one hundred one thousand, forty-three".