2101232112221 has 8 divisors (see below), whose sum is σ = 2292819110688. Its totient is φ = 1909739430000.

The previous prime is 2101232112193. The next prime is 2101232112251. The reversal of 2101232112221 is 1222112321012.

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 2101232112221 - 2⁶ = 2101232112157 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2101232112193 and 2101232112202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2101232112251) 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, 23532470 + ... + 23621591.

It is an arithmetic number, because the mean of its divisors is an integer number (286602388836).

Almost surely, 2^{2101232112221} is an apocalyptic number.

It is an amenable number.

2101232112221 is a deficient number, since it is larger than the sum of its proper divisors (191586998467).

2101232112221 is a wasteful number, since it uses less digits than its factorization.

2101232112221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47158123.

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

Adding to 2101232112221 its reverse (1222112321012), we get a palindrome (3323344433233).

The spelling of 2101232112221 in words is "two trillion, one hundred one billion, two hundred thirty-two million, one hundred twelve thousand, two hundred twenty-one".