1021122222223 has 4 divisors (see below), whose sum is σ = 1021200764968. Its totient is φ = 1021043679480.

The previous prime is 1021122222203. The next prime is 1021122222227. The reversal of 1021122222223 is 3222222211201.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1021122222223 - 2⁹ = 1021122221711 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1021122222194 and 1021122222203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021122222227) 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, 39251868 + ... + 39277873.

It is an arithmetic number, because the mean of its divisors is an integer number (255300191242).

Almost surely, 2^{1021122222223} is an apocalyptic number.

1021122222223 is a deficient number, since it is larger than the sum of its proper divisors (78542745).

1021122222223 is an equidigital number, since it uses as much as digits as its factorization.

1021122222223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78542744.

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 1021122222223 its reverse (3222222211201), we get a palindrome (4243344433424).

The spelling of 1021122222223 in words is "one trillion, twenty-one billion, one hundred twenty-two million, two hundred twenty-two thousand, two hundred twenty-three".