210022010022221 has 2 divisors, whose sum is σ = 210022010022222. Its totient is φ = 210022010022220.

The previous prime is 210022010022199. The next prime is 210022010022239. The reversal of 210022010022221 is 122220010220012.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 180658464855625 + 29363545166596 = 13440925^2 + 5418814^2 .

It is a cyclic number.

It is not a de Polignac number, because 210022010022221 - 2²⁶ = 210021942913357 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 210022010022221.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (210022010522221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105011005011110 + 105011005011111.

It is an arithmetic number, because the mean of its divisors is an integer number (105011005011111).

Almost surely, 2^{210022010022221} is an apocalyptic number.

It is an amenable number.

210022010022221 is a deficient number, since it is larger than the sum of its proper divisors (1).

210022010022221 is an equidigital number, since it uses as much as digits as its factorization.

210022010022221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 210022010022221 its reverse (122220010220012), we get a palindrome (332242020242233).

The spelling of 210022010022221 in words is "two hundred ten trillion, twenty-two billion, ten million, twenty-two thousand, two hundred twenty-one".