20010111323101 has 4 divisors (see below), whose sum is σ = 20204384248672. Its totient is φ = 19815838397532.

The previous prime is 20010111323089. The next prime is 20010111323113. The reversal of 20010111323101 is 10132311101002.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (20010111323089) and next prime (20010111323113).

It is a cyclic number.

It is not a de Polignac number, because 20010111323101 - 2³⁷ = 19872672369629 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20010111323161) 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, 97136462631 + ... + 97136462836.

It is an arithmetic number, because the mean of its divisors is an integer number (5051096062168).

Almost surely, 2^{20010111323101} is an apocalyptic number.

It is an amenable number.

20010111323101 is a deficient number, since it is larger than the sum of its proper divisors (194272925571).

20010111323101 is a wasteful number, since it uses less digits than its factorization.

20010111323101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194272925570.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 20010111323101 its reverse (10132311101002), we get a palindrome (30142422424103).

It can be divided in two parts, 20010 and 111323101, that added together give a palindrome (111343111).

The spelling of 20010111323101 in words is "twenty trillion, ten billion, one hundred eleven million, three hundred twenty-three thousand, one hundred one".