20010113220001 has 6 divisors (see below), whose sum is σ = 20237472171302. Its totient is φ = 19785280479360.

The previous prime is 20010113219963. The next prime is 20010113220103. The reversal of 20010113220001 is 10002231101002.

It can be written as a sum of positive squares in 3 ways, for example, as 554965401600 + 19455147818401 = 744960^2 + 4410799^2 .

It is a de Polignac number, because none of the positive numbers 2^k-20010113220001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20010113224001) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1263097320 + ... + 1263113161.

Almost surely, 2^{20010113220001} is an apocalyptic number.

It is an amenable number.

20010113220001 is a deficient number, since it is larger than the sum of its proper divisors (227358951301).

20010113220001 is an frugal number, since it uses more digits than its factorization.

20010113220001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2526210659 (or 2526210570 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 20010113220001 its reverse (10002231101002), we get a palindrome (30012344321003).

The spelling of 20010113220001 in words is "twenty trillion, ten billion, one hundred thirteen million, two hundred twenty thousand, one".