20110220111001 has 16 divisors (see below), whose sum is σ = 26826933968640. Its totient is φ = 13400161175760.

The previous prime is 20110220110987. The next prime is 20110220111017. The reversal of 20110220111001 is 10011102201102.

It is not a de Polignac number, because 20110220111001 - 2⁵ = 20110220110969 is a prime.

It is a super-2 number, since 2×20110220111001² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20110220111101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61483270 + ... + 61809488.

It is an arithmetic number, because the mean of its divisors is an integer number (1676683373040).

Almost surely, 2^{20110220111001} is an apocalyptic number.

It is an amenable number.

20110220111001 is a deficient number, since it is larger than the sum of its proper divisors (6716713857639).

20110220111001 is a wasteful number, since it uses less digits than its factorization.

20110220111001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 336356.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 20110220111001 its reverse (10011102201102), we get a palindrome (30121322312103).

The spelling of 20110220111001 in words is "twenty trillion, one hundred ten billion, two hundred twenty million, one hundred eleven thousand, one".