232100210221 has 4 divisors (see below), whose sum is σ = 253200229344. Its totient is φ = 211000191100.

The previous prime is 232100210141. The next prime is 232100210257. The reversal of 232100210221 is 122012001232.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 232100210221 - 2⁷ = 232100210093 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 232100210195 and 232100210204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (232100210261) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10550009545 + ... + 10550009566.

It is an arithmetic number, because the mean of its divisors is an integer number (63300057336).

Almost surely, 2^232100210221 is an apocalyptic number.

It is an amenable number.

232100210221 is a deficient number, since it is larger than the sum of its proper divisors (21100019123).

232100210221 is a wasteful number, since it uses less digits than its factorization.

232100210221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21100019122.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 232100210221 its reverse (122012001232), we get a palindrome (354112211453).

The spelling of 232100210221 in words is "two hundred thirty-two billion, one hundred million, two hundred ten thousand, two hundred twenty-one".