1022102112221 has 4 divisors (see below), whose sum is σ = 1022406403200. Its totient is φ = 1021797821244.

The previous prime is 1022102112139. The next prime is 1022102112277. The reversal of 1022102112221 is 1222112012201.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1022102112221 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 1022102112221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1022102114221) 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 3 ways as a sum of consecutive naturals, for example, 152140451 + ... + 152147168.

It is an arithmetic number, because the mean of its divisors is an integer number (255601600800).

Almost surely, 2^{1022102112221} is an apocalyptic number.

It is an amenable number.

1022102112221 is a deficient number, since it is larger than the sum of its proper divisors (304290979).

1022102112221 is an equidigital number, since it uses as much as digits as its factorization.

1022102112221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 304290978.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 1022102112221 its reverse (1222112012201), we get a palindrome (2244214124422).

The spelling of 1022102112221 in words is "one trillion, twenty-two billion, one hundred two million, one hundred twelve thousand, two hundred twenty-one".