21020112011101 has 8 divisors (see below), whose sum is σ = 24058469629440. Its totient is φ = 17990625511248.

The previous prime is 21020112011083. The next prime is 21020112011117. The reversal of 21020112011101 is 10111021102012.

It is a happy number.

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 21020112011101 - 2⁴³ = 12224018988893 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 (21020112011161) 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, 2217774541 + ... + 2217784018.

It is an arithmetic number, because the mean of its divisors is an integer number (3007308703680).

Almost surely, 2^{21020112011101} is an apocalyptic number.

It is an amenable number.

21020112011101 is a deficient number, since it is larger than the sum of its proper divisors (3038357618339).

21020112011101 is an equidigital number, since it uses as much as digits as its factorization.

21020112011101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4435559243.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 21020112011101 its reverse (10111021102012), we get a palindrome (31131133113113).

The spelling of 21020112011101 in words is "twenty-one trillion, twenty billion, one hundred twelve million, eleven thousand, one hundred one".