210122313122221 has 8 divisors (see below), whose sum is σ = 227656459635264. Its totient is φ = 193163056658880.

The previous prime is 210122313122213. The next prime is 210122313122339. The reversal of 210122313122221 is 122221313221012.

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

It is not a de Polignac number, because 210122313122221 - 2³ = 210122313122213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210122313122021) 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, 143722511665 + ... + 143722513126.

It is an arithmetic number, because the mean of its divisors is an integer number (28457057454408).

Almost surely, 2^{210122313122221} is an apocalyptic number.

It is an amenable number.

210122313122221 is a deficient number, since it is larger than the sum of its proper divisors (17534146513043).

210122313122221 is a wasteful number, since it uses less digits than its factorization.

210122313122221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 287445024851.

The product of its (nonzero) digits is 1152, while the sum is 25.

Adding to 210122313122221 its reverse (122221313221012), we get a palindrome (332343626343233).

The spelling of 210122313122221 in words is "two hundred ten trillion, one hundred twenty-two billion, three hundred thirteen million, one hundred twenty-two thousand, two hundred twenty-one".