1102172147 has 4 divisors (see below), whose sum is σ = 1102354176. Its totient is φ = 1101990120.

The previous prime is 1102172143. The next prime is 1102172207. The reversal of 1102172147 is 7412712011.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1102172147 - 2² = 1102172143 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1102172143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81608 + ... + 94149.

It is an arithmetic number, because the mean of its divisors is an integer number (275588544).

Almost surely, 2^1102172147 is an apocalyptic number.

1102172147 is a deficient number, since it is larger than the sum of its proper divisors (182029).

1102172147 is an equidigital number, since it uses as much as digits as its factorization.

1102172147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182028.

The product of its (nonzero) digits is 784, while the sum is 26.

The square root of 1102172147 is about 33198.9781017428. The cubic root of 1102172147 is about 1032.9591426853.

Adding to 1102172147 its reverse (7412712011), we get a palindrome (8514884158).

The spelling of 1102172147 in words is "one billion, one hundred two million, one hundred seventy-two thousand, one hundred forty-seven".