1002122223121 has 4 divisors (see below), whose sum is σ = 1002131463744. Its totient is φ = 1002112982500.

The previous prime is 1002122223029. The next prime is 1002122223127. The reversal of 1002122223121 is 1213222212001.

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 not a de Polignac number, because 1002122223121 - 2⁷ = 1002122222993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1002122223127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4455685 + ... + 4675186.

It is an arithmetic number, because the mean of its divisors is an integer number (250532865936).

Almost surely, 2^{1002122223121} is an apocalyptic number.

It is an amenable number.

1002122223121 is a deficient number, since it is larger than the sum of its proper divisors (9240623).

1002122223121 is an equidigital number, since it uses as much as digits as its factorization.

1002122223121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9240622.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 1002122223121 its reverse (1213222212001), we get a palindrome (2215344435122).

The spelling of 1002122223121 in words is "one trillion, two billion, one hundred twenty-two million, two hundred twenty-three thousand, one hundred twenty-one".