210222212112221 has 8 divisors (see below), whose sum is σ = 210913185178080. Its totient is φ = 209531279372688.

The previous prime is 210222212112181. The next prime is 210222212112277. The reversal of 210222212112221 is 122211212222012.

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 210222212112221 - 2¹⁴ = 210222212095837 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 (210222212912221) 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, 379415 + ... + 20508251.

It is an arithmetic number, because the mean of its divisors is an integer number (26364148147260).

Almost surely, 2^{210222212112221} is an apocalyptic number.

It is an amenable number.

210222212112221 is a deficient number, since it is larger than the sum of its proper divisors (690973065859).

210222212112221 is a wasteful number, since it uses less digits than its factorization.

210222212112221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20163163.

The product of its (nonzero) digits is 512, while the sum is 23.

Adding to 210222212112221 its reverse (122211212222012), we get a palindrome (332433424334233).

The spelling of 210222212112221 in words is "two hundred ten trillion, two hundred twenty-two billion, two hundred twelve million, one hundred twelve thousand, two hundred twenty-one".