210022211112221 has 2 divisors, whose sum is σ = 210022211112222. Its totient is φ = 210022211112220.

The previous prime is 210022211112199. The next prime is 210022211112227. The reversal of 210022211112221 is 122211112220012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 188288069676100 + 21734141436121 = 13721810^2 + 4661989^2 .

It is a cyclic number.

It is not a de Polignac number, because 210022211112221 - 2⁴⁶ = 139653466934557 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 210022211112193 and 210022211112202.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (210022211112227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105011105556110 + 105011105556111.

It is an arithmetic number, because the mean of its divisors is an integer number (105011105556111).

Almost surely, 2^{210022211112221} is an apocalyptic number.

It is an amenable number.

210022211112221 is a deficient number, since it is larger than the sum of its proper divisors (1).

210022211112221 is an equidigital number, since it uses as much as digits as its factorization.

210022211112221 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 20.

Adding to 210022211112221 its reverse (122211112220012), we get a palindrome (332233323332233).

The spelling of 210022211112221 in words is "two hundred ten trillion, twenty-two billion, two hundred eleven million, one hundred twelve thousand, two hundred twenty-one".