2012171522 has 4 divisors (see below), whose sum is σ = 3018257286. Its totient is φ = 1006085760.

The previous prime is 2012171443. The next prime is 2012171531. The reversal of 2012171522 is 2251712102.

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

It can be written as a sum of positive squares in only one way, i.e., 1621753441 + 390418081 = 40271^2 + 19759^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 503042879 + ... + 503042882.

Almost surely, 2^2012171522 is an apocalyptic number.

2012171522 is a deficient number, since it is larger than the sum of its proper divisors (1006085764).

2012171522 is a wasteful number, since it uses less digits than its factorization.

2012171522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1006085763.

The product of its (nonzero) digits is 560, while the sum is 23.

The square root of 2012171522 is about 44857.2348902605. The cubic root of 2012171522 is about 1262.4717420333.

Adding to 2012171522 its reverse (2251712102), we get a palindrome (4263883624).

The spelling of 2012171522 in words is "two billion, twelve million, one hundred seventy-one thousand, five hundred twenty-two".