622210221 has 16 divisors (see below), whose sum is σ = 922945920. Its totient is φ = 414288000.

The previous prime is 622210213. The next prime is 622210223. The reversal of 622210221 is 122012226.

622210221 is a `hidden beast` number, since 622 + 21 + 0 + 2 + 21 = 666.

It is not a de Polignac number, because 622210221 - 2³ = 622210213 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 622210194 and 622210203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (622210223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8221 + ... + 36221.

It is an arithmetic number, because the mean of its divisors is an integer number (57684120).

Almost surely, 2^622210221 is an apocalyptic number.

It is an amenable number.

622210221 is a deficient number, since it is larger than the sum of its proper divisors (300735699).

622210221 is a wasteful number, since it uses less digits than its factorization.

622210221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28833 (or 28827 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 622210221 is about 24944.1420177163. The cubic root of 622210221 is about 853.7139545343.

Adding to 622210221 its reverse (122012226), we get a palindrome (744222447).

The spelling of 622210221 in words is "six hundred twenty-two million, two hundred ten thousand, two hundred twenty-one".