221002202122 has 24 divisors (see below), whose sum is σ = 363290042304. Its totient is φ = 100772075664.

The previous prime is 221002202107. The next prime is 221002202123. The reversal of 221002202122 is 221202200122.

221002202122 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 221002202096 and 221002202105.

It is not an unprimeable number, because it can be changed into a prime (221002202123) 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 11 ways as a sum of consecutive naturals, for example, 3910818 + ... + 3966925.

It is an arithmetic number, because the mean of its divisors is an integer number (15137085096).

Almost surely, 2^221002202122 is an apocalyptic number.

221002202122 is a deficient number, since it is larger than the sum of its proper divisors (142287840182).

221002202122 is a wasteful number, since it uses less digits than its factorization.

221002202122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7877854 (or 7877841 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 221002202122 its reverse (221202200122), we get a palindrome (442204402244).

It can be divided in two parts, 22100 and 2202122, that added together give a palindrome (2224222).

The spelling of 221002202122 in words is "two hundred twenty-one billion, two million, two hundred two thousand, one hundred twenty-two".