2221202122 has 8 divisors (see below), whose sum is σ = 3394667556. Its totient is φ = 1089646272.

The previous prime is 2221202117. The next prime is 2221202131. The reversal of 2221202122 is 2212021222.

It can be written as a sum of positive squares in 2 ways, for example, as 2167926721 + 53275401 = 46561^2 + 7299^2 .

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 = 2221202096 and 2221202105.

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, 10477263 + ... + 10477474.

Almost surely, 2^2221202122 is an apocalyptic number.

2221202122 is a deficient number, since it is larger than the sum of its proper divisors (1173465434).

2221202122 is a wasteful number, since it uses less digits than its factorization.

2221202122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20954792.

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

The square root of 2221202122 is about 47129.6310403551. The cubic root of 2221202122 is about 1304.7561719606.

Adding to 2221202122 its reverse (2212021222), we get a palindrome (4433223344).

Subtracting from 2221202122 its reverse (2212021222), we obtain a square (9180900 = 3030²).

It can be divided in two parts, 2 and 221202122, that multiplied together give a palindrome (442404244).

The spelling of 2221202122 in words is "two billion, two hundred twenty-one million, two hundred two thousand, one hundred twenty-two".