210151517122 has 4 divisors (see below), whose sum is σ = 315227275686. Its totient is φ = 105075758560.

The previous prime is 210151517041. The next prime is 210151517141. The reversal of 210151517122 is 221715151012.

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., 140498278561 + 69653238561 = 374831^2 + 263919^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52537879279 + ... + 52537879282.

Almost surely, 2^210151517122 is an apocalyptic number.

210151517122 is a deficient number, since it is larger than the sum of its proper divisors (105075758564).

210151517122 is a wasteful number, since it uses less digits than its factorization.

210151517122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105075758563.

The product of its (nonzero) digits is 1400, while the sum is 28.

Adding to 210151517122 its reverse (221715151012), we get a palindrome (431866668134).

The spelling of 210151517122 in words is "two hundred ten billion, one hundred fifty-one million, five hundred seventeen thousand, one hundred twenty-two".