20110110020021 has 8 divisors (see below), whose sum is σ = 24192613558080. Its totient is φ = 16330014151488.

The previous prime is 20110110019991. The next prime is 20110110020081. The reversal of 20110110020021 is 12002001101102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20110110020021 - 2²² = 20110105825717 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20110110019984 and 20110110020011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20110110020081) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75601917236 + ... + 75601917501.

It is an arithmetic number, because the mean of its divisors is an integer number (3024076694760).

Almost surely, 2^{20110110020021} is an apocalyptic number.

It is an amenable number.

20110110020021 is a deficient number, since it is larger than the sum of its proper divisors (4082503538059).

20110110020021 is a wasteful number, since it uses less digits than its factorization.

20110110020021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151203834763.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 20110110020021 its reverse (12002001101102), we get a palindrome (32112111121123).

The spelling of 20110110020021 in words is "twenty trillion, one hundred ten billion, one hundred ten million, twenty thousand, twenty-one".