21120112021101 has 8 divisors (see below), whose sum is σ = 29816628735744. Its totient is φ = 13251834993600.

The previous prime is 21120112021087. The next prime is 21120112021153. The reversal of 21120112021101 is 10112021102112.

It is a happy number.

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

It is not a de Polignac number, because 21120112021101 - 2³⁰ = 21119038279277 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21120112021171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 207059921725 + ... + 207059921826.

It is an arithmetic number, because the mean of its divisors is an integer number (3727078591968).

Almost surely, 2^{21120112021101} is an apocalyptic number.

It is an amenable number.

21120112021101 is a deficient number, since it is larger than the sum of its proper divisors (8696516714643).

21120112021101 is a wasteful number, since it uses less digits than its factorization.

21120112021101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 414119843571.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 21120112021101 its reverse (10112021102112), we get a palindrome (31232133123213).

The spelling of 21120112021101 in words is "twenty-one trillion, one hundred twenty billion, one hundred twelve million, twenty-one thousand, one hundred one".