20401441101 has 12 divisors (see below), whose sum is σ = 30484912380. Its totient is φ = 13131961920.

The previous prime is 20401441097. The next prime is 20401441147. The reversal of 20401441101 is 10114410402.

It can be written as a sum of positive squares in 2 ways, for example, as 8487936900 + 11913504201 = 92130^2 + 109149^2 .

It is not a de Polignac number, because 20401441101 - 2² = 20401441097 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20401441171) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 39082960 + ... + 39083481.

It is an arithmetic number, because the mean of its divisors is an integer number (2540409365).

Almost surely, 2^20401441101 is an apocalyptic number.

It is an amenable number.

20401441101 is a deficient number, since it is larger than the sum of its proper divisors (10083471279).

20401441101 is a wasteful number, since it uses less digits than its factorization.

20401441101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78166476 (or 78166473 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 20401441101 its reverse (10114410402), we get a palindrome (30515851503).

The spelling of 20401441101 in words is "twenty billion, four hundred one million, four hundred forty-one thousand, one hundred one".