210221012323221 has 8 divisors (see below), whose sum is σ = 287131138783104. Its totient is φ = 136729113706080.

The previous prime is 210221012323211. The next prime is 210221012323237. The reversal of 210221012323221 is 122323210122012.

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

It is not a de Polignac number, because 210221012323221 - 2¹³ = 210221012315029 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 210221012323191 and 210221012323200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210221012323211) 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, 854556960541 + ... + 854556960786.

It is an arithmetic number, because the mean of its divisors is an integer number (35891392347888).

Almost surely, 2^{210221012323221} is an apocalyptic number.

It is an amenable number.

210221012323221 is a deficient number, since it is larger than the sum of its proper divisors (76910126459883).

210221012323221 is a wasteful number, since it uses less digits than its factorization.

210221012323221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1709113921371.

The product of its (nonzero) digits is 1152, while the sum is 24.

Adding to 210221012323221 its reverse (122323210122012), we get a palindrome (332544222445233).

The spelling of 210221012323221 in words is "two hundred ten trillion, two hundred twenty-one billion, twelve million, three hundred twenty-three thousand, two hundred twenty-one".