1210220222221 has 8 divisors (see below), whose sum is σ = 1214674642944. Its totient is φ = 1205766416400.

The previous prime is 1210220222209. The next prime is 1210220222227. The reversal of 1210220222221 is 1222220220121.

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 1210220222221 - 2⁹ = 1210220221709 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 (1210220222227) 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, 3995316 + ... + 4287538.

It is an arithmetic number, because the mean of its divisors is an integer number (151834330368).

Almost surely, 2^{1210220222221} is an apocalyptic number.

It is an amenable number.

1210220222221 is a deficient number, since it is larger than the sum of its proper divisors (4454420723).

1210220222221 is a wasteful number, since it uses less digits than its factorization.

1210220222221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307451.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 1210220222221 its reverse (1222220220121), we get a palindrome (2432440442342).

The spelling of 1210220222221 in words is "one trillion, two hundred ten billion, two hundred twenty million, two hundred twenty-two thousand, two hundred twenty-one".