2201172155 has 32 divisors (see below), whose sum is σ = 3442207104. Its totient is φ = 1311307776.

The previous prime is 2201172137. The next prime is 2201172157. The reversal of 2201172155 is 5512711022.

2201172155 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 2201172155 - 2⁶ = 2201172091 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2201172157) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 134552 + ... + 150021.

It is an arithmetic number, because the mean of its divisors is an integer number (107568972).

Almost surely, 2^2201172155 is an apocalyptic number.

2201172155 is a deficient number, since it is larger than the sum of its proper divisors (1241034949).

2201172155 is a wasteful number, since it uses less digits than its factorization.

2201172155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284615.

The product of its (nonzero) digits is 1400, while the sum is 26.

The square root of 2201172155 is about 46916.6511486061. The cubic root of 2201172155 is about 1300.8223898966.

Adding to 2201172155 its reverse (5512711022), we get a palindrome (7713883177).

The spelling of 2201172155 in words is "two billion, two hundred one million, one hundred seventy-two thousand, one hundred fifty-five".