1021122432221 has 8 divisors (see below), whose sum is σ = 1024418919744. Its totient is φ = 1017827978560.

The previous prime is 1021122432193. The next prime is 1021122432223. The reversal of 1021122432221 is 1222342211201.

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 1021122432221 - 2²⁶ = 1021055323357 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 (1021122432223) 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, 500501 + ... + 1514181.

It is an arithmetic number, because the mean of its divisors is an integer number (128052364968).

Almost surely, 2^{1021122432221} is an apocalyptic number.

It is an amenable number.

1021122432221 is a deficient number, since it is larger than the sum of its proper divisors (3296487523).

1021122432221 is a wasteful number, since it uses less digits than its factorization.

1021122432221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1016931.

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 1021122432221 its reverse (1222342211201), we get a palindrome (2243464643422).

The spelling of 1021122432221 in words is "one trillion, twenty-one billion, one hundred twenty-two million, four hundred thirty-two thousand, two hundred twenty-one".