2155202122 has 8 divisors (see below), whose sum is σ = 3320176356. Its totient is φ = 1048476672.

The previous prime is 2155202117. The next prime is 2155202177. The reversal of 2155202122 is 2212025512.

It can be written as a sum of positive squares in 2 ways, for example, as 2042226481 + 112975641 = 45191^2 + 10629^2 .

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 = 2155202093 and 2155202102.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14562103 + ... + 14562250.

Almost surely, 2^2155202122 is an apocalyptic number.

2155202122 is a deficient number, since it is larger than the sum of its proper divisors (1164974234).

2155202122 is a wasteful number, since it uses less digits than its factorization.

2155202122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29124392.

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 2155202122 is about 46424.1545103408. The cubic root of 2155202122 is about 1291.7030012690.

Adding to 2155202122 its reverse (2212025512), we get a palindrome (4367227634).

The spelling of 2155202122 in words is "two billion, one hundred fifty-five million, two hundred two thousand, one hundred twenty-two".