201171210074 has 4 divisors (see below), whose sum is σ = 301756815114. Its totient is φ = 100585605036.

The previous prime is 201171210067. The next prime is 201171210083. The reversal of 201171210074 is 470012171102.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 470012171102 = 2 ⋅235006085551.

It can be written as a sum of positive squares in only one way, i.e., 193446030625 + 7725179449 = 439825^2 + 87893^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50292802517 + ... + 50292802520.

Almost surely, 2^201171210074 is an apocalyptic number.

201171210074 is a deficient number, since it is larger than the sum of its proper divisors (100585605040).

201171210074 is a wasteful number, since it uses less digits than its factorization.

201171210074 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100585605039.

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

Adding to 201171210074 its reverse (470012171102), we get a palindrome (671183381176).

The spelling of 201171210074 in words is "two hundred one billion, one hundred seventy-one million, two hundred ten thousand, seventy-four".