213120213122 has 8 divisors (see below), whose sum is σ = 319682278476. Its totient is φ = 106559453632.

The previous prime is 213120213109. The next prime is 213120213181. The reversal of 213120213122 is 221312021312.

It can be written as a sum of positive squares in 2 ways, for example, as 192318208681 + 20802004441 = 438541^2 + 144229^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 213120213094 and 213120213103.

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, 478718 + ... + 809574.

Almost surely, 2^213120213122 is an apocalyptic number.

213120213122 is a deficient number, since it is larger than the sum of its proper divisors (106562065354).

213120213122 is a wasteful number, since it uses less digits than its factorization.

213120213122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 652932.

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

Adding to 213120213122 its reverse (221312021312), we get a palindrome (434432234434).

It can be divided in two parts, 21312021312 and 2, that multiplied together give a palindrome (42624042624).

The spelling of 213120213122 in words is "two hundred thirteen billion, one hundred twenty million, two hundred thirteen thousand, one hundred twenty-two".