1000221223123 has 4 divisors (see below), whose sum is σ = 1003634947728. Its totient is φ = 996807498520.

The previous prime is 1000221223121. The next prime is 1000221223159. The reversal of 1000221223123 is 3213221220001.

1000221223123 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 1000221223123 - 2¹ = 1000221223121 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 1000221223123.

It is not an unprimeable number, because it can be changed into a prime (1000221223121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1706861863 + ... + 1706862448.

It is an arithmetic number, because the mean of its divisors is an integer number (250908736932).

Almost surely, 2^{1000221223123} is an apocalyptic number.

1000221223123 is a deficient number, since it is larger than the sum of its proper divisors (3413724605).

1000221223123 is an equidigital number, since it uses as much as digits as its factorization.

1000221223123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3413724604.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 1000221223123 its reverse (3213221220001), we get a palindrome (4213442443124).

The spelling of 1000221223123 in words is "one trillion, two hundred twenty-one million, two hundred twenty-three thousand, one hundred twenty-three".