213122134 has 8 divisors (see below), whose sum is σ = 319996368. Its totient is φ = 106456680.

The previous prime is 213122099. The next prime is 213122137. The reversal of 213122134 is 431221312.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213122137) by changing a digit.

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, 49617 + ... + 53740.

It is an arithmetic number, because the mean of its divisors is an integer number (39999546).

Almost surely, 2^213122134 is an apocalyptic number.

213122134 is a deficient number, since it is larger than the sum of its proper divisors (106874234).

213122134 is a wasteful number, since it uses less digits than its factorization.

213122134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104390.

The product of its digits is 288, while the sum is 19.

The square root of 213122134 is about 14598.7031615825. The cubic root of 213122134 is about 597.3233865825.

Adding to 213122134 its reverse (431221312), we get a palindrome (644343446).

The spelling of 213122134 in words is "two hundred thirteen million, one hundred twenty-two thousand, one hundred thirty-four".