1022022012221 has 12 divisors (see below), whose sum is σ = 1170353919072. Its totient is φ = 874275764376.

The previous prime is 1022022012211. The next prime is 1022022012223. The reversal of 1022022012221 is 1222102202201.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-1022022012221 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1022022012221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1022022012223) 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 11 ways as a sum of consecutive naturals, for example, 1482530 + ... + 2059596.

It is an arithmetic number, because the mean of its divisors is an integer number (97529493256).

Almost surely, 2^{1022022012221} is an apocalyptic number.

It is an amenable number.

1022022012221 is a deficient number, since it is larger than the sum of its proper divisors (148331906851).

1022022012221 is an frugal number, since it uses more digits than its factorization.

1022022012221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 578080 (or 577577 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 1022022012221 its reverse (1222102202201), we get a palindrome (2244124214422).

The spelling of 1022022012221 in words is "one trillion, twenty-two billion, twenty-two million, twelve thousand, two hundred twenty-one".