221202122 has 8 divisors (see below), whose sum is σ = 334030500. Its totient is φ = 109858624.

The previous prime is 221202119. The next prime is 221202131.

221202122 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 2 ways, for example, as 219662041 + 1540081 = 14821^2 + 1241^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 221202097 and 221202106.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 370847 + ... + 371442.

Almost surely, 2^221202122 is an apocalyptic number.

221202122 is a deficient number, since it is larger than the sum of its proper divisors (112828378).

221202122 is a wasteful number, since it uses less digits than its factorization.

221202122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 742440.

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 221202122 is about 14872.8652922024. The cubic root of 221202122 is about 604.7786199114.

It can be divided in two parts, 22120 and 2122, that added together give a palindrome (24242).

The spelling of 221202122 in words is "two hundred twenty-one million, two hundred two thousand, one hundred twenty-two".