20200111110021 has 12 divisors (see below), whose sum is σ = 27049572152288. Its totient is φ = 13408943461344.

The previous prime is 20200111110019. The next prime is 20200111110037. The reversal of 20200111110021 is 12001111100202.

It is not a de Polignac number, because 20200111110021 - 2¹ = 20200111110019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20200111109979 and 20200111110006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20200111111021) 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, 61851265 + ... + 62176998.

Almost surely, 2^{20200111110021} is an apocalyptic number.

It is an amenable number.

20200111110021 is a deficient number, since it is larger than the sum of its proper divisors (6849461042267).

20200111110021 is an equidigital number, since it uses as much as digits as its factorization.

20200111110021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124028732 (or 124028499 counting only the distinct ones).

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

Adding to 20200111110021 its reverse (12001111100202), we get a palindrome (32201222210223).

The spelling of 20200111110021 in words is "twenty trillion, two hundred billion, one hundred eleven million, one hundred ten thousand, twenty-one".