1210222102221 has 32 divisors (see below), whose sum is σ = 1956211430400. Its totient is φ = 733356595440.

The previous prime is 1210222102207. The next prime is 1210222102237. The reversal of 1210222102221 is 1222012220121.

It is a happy number.

1210222102221 is a `hidden beast` number, since 1 + 210 + 22 + 210 + 2 + 221 = 666.

It is not a de Polignac number, because 1210222102221 - 2⁹ = 1210222101709 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1210222102194 and 1210222102203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1210222107221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1671760 + ... + 2283686.

It is an arithmetic number, because the mean of its divisors is an integer number (61131607200).

Almost surely, 2^{1210222102221} is an apocalyptic number.

1210222102221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1210222102221 is a deficient number, since it is larger than the sum of its proper divisors (745989328179).

1210222102221 is a wasteful number, since it uses less digits than its factorization.

1210222102221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 618606 (or 618600 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 1210222102221 its reverse (1222012220121), we get a palindrome (2432234322342).

The spelling of 1210222102221 in words is "one trillion, two hundred ten billion, two hundred twenty-two million, one hundred two thousand, two hundred twenty-one".