2171154223 has 16 divisors (see below), whose sum is σ = 2649692160. Its totient is φ = 1738850400.

The previous prime is 2171154211. The next prime is 2171154287. The reversal of 2171154223 is 3224511712.

2171154223 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2171154223 - 2⁹ = 2171153711 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2171154191 and 2171154200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2171154203) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 166213 + ... + 178798.

It is an arithmetic number, because the mean of its divisors is an integer number (165605760).

Almost surely, 2^2171154223 is an apocalyptic number.

2171154223 is a deficient number, since it is larger than the sum of its proper divisors (478537937).

2171154223 is a wasteful number, since it uses less digits than its factorization.

2171154223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 345078.

The product of its digits is 3360, while the sum is 28.

The square root of 2171154223 is about 46595.6459661201. The cubic root of 2171154223 is about 1294.8820915989.

Adding to 2171154223 its reverse (3224511712), we get a palindrome (5395665935).

It can be divided in two parts, 217 and 1154223, that added together give a triangular number (1154440 = T₁₅₁₉).

The spelling of 2171154223 in words is "two billion, one hundred seventy-one million, one hundred fifty-four thousand, two hundred twenty-three".