2221011302123 has 4 divisors (see below), whose sum is σ = 2222789535000. Its totient is φ = 2219233069248.

The previous prime is 2221011302117. The next prime is 2221011302171. The reversal of 2221011302123 is 3212031101222.

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 2221011302123 - 2²² = 2221007107819 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2221011302095 and 2221011302104.

It is not an unprimeable number, because it can be changed into a prime (2221011302173) 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, 889114565 + ... + 889117062.

It is an arithmetic number, because the mean of its divisors is an integer number (555697383750).

Almost surely, 2^{2221011302123} is an apocalyptic number.

2221011302123 is a deficient number, since it is larger than the sum of its proper divisors (1778232877).

2221011302123 is a wasteful number, since it uses less digits than its factorization.

2221011302123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1778232876.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 2221011302123 its reverse (3212031101222), we get a palindrome (5433042403345).

The spelling of 2221011302123 in words is "two trillion, two hundred twenty-one billion, eleven million, three hundred two thousand, one hundred twenty-three".