213122212130 has 8 divisors (see below), whose sum is σ = 383619981852. Its totient is φ = 85248884848.

The previous prime is 213122212129. The next prime is 213122212169. The reversal of 213122212130 is 31212221312.

It can be written as a sum of positive squares in 2 ways, for example, as 177602402041 + 35519810089 = 421429^2 + 188467^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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 in 3 ways as a sum of consecutive naturals, for example, 10656110597 + ... + 10656110616.

Almost surely, 2^213122212130 is an apocalyptic number.

213122212130 is a deficient number, since it is larger than the sum of its proper divisors (170497769722).

213122212130 is a wasteful number, since it uses less digits than its factorization.

213122212130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21312221220.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 213122212130 its reverse (31212221312), we get a palindrome (244334433442).

The spelling of 213122212130 in words is "two hundred thirteen billion, one hundred twenty-two million, two hundred twelve thousand, one hundred thirty".