221002202200123 has 16 divisors (see below), whose sum is σ = 222072313313536. Its totient is φ = 219934207342080.

The previous prime is 221002202200079. The next prime is 221002202200133. The reversal of 221002202200123 is 321002202200122.

It is a cyclic number.

It is not a de Polignac number, because 221002202200123 - 2¹³ = 221002202191931 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 221002202200123.

It is not an unprimeable number, because it can be changed into a prime (221002202200133) 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 15 ways as a sum of consecutive naturals, for example, 784019215 + ... + 784301047.

It is an arithmetic number, because the mean of its divisors is an integer number (13879519582096).

Almost surely, 2^{221002202200123} is an apocalyptic number.

221002202200123 is a deficient number, since it is larger than the sum of its proper divisors (1070111113413).

221002202200123 is a wasteful number, since it uses less digits than its factorization.

221002202200123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285574.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 221002202200123 its reverse (321002202200122), we get a palindrome (542004404400245).

Subtracting 221002202200123 from its reverse (321002202200122), we obtain a palindrome (99999999999999).

The spelling of 221002202200123 in words is "two hundred twenty-one trillion, two billion, two hundred two million, two hundred thousand, one hundred twenty-three".