21210120222113 has 8 divisors (see below), whose sum is σ = 21608539727808. Its totient is φ = 20814108085584.

The previous prime is 21210120222073. The next prime is 21210120222119. The reversal of 21210120222113 is 31122202101212.

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 21210120222113 - 2³⁰ = 21209046480289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21210120222119) 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, 601824506 + ... + 601859747.

It is an arithmetic number, because the mean of its divisors is an integer number (2701067465976).

Almost surely, 2^{21210120222113} is an apocalyptic number.

It is an amenable number.

21210120222113 is a deficient number, since it is larger than the sum of its proper divisors (398419505695).

21210120222113 is a wasteful number, since it uses less digits than its factorization.

21210120222113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1203684583.

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 21210120222113 its reverse (31122202101212), we get a palindrome (52332322323325).

The spelling of 21210120222113 in words is "twenty-one trillion, two hundred ten billion, one hundred twenty million, two hundred twenty-two thousand, one hundred thirteen".