213122104 has 32 divisors (see below), whose sum is σ = 440359920. Its totient is φ = 96074496.

The previous prime is 213122099. The next prime is 213122137. The reversal of 213122104 is 401221312.

213122104 = 317² + 318² + ... + 875².

213122104 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19357 + ... + 28300.

Almost surely, 2^213122104 is an apocalyptic number.

It is an amenable number.

213122104 is an abundant number, since it is smaller than the sum of its proper divisors (227237816).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

213122104 is a wasteful number, since it uses less digits than its factorization.

213122104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47719 (or 47715 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 213122104 is about 14598.7021340940. The cubic root of 213122104 is about 597.3233585552.

Adding to 213122104 its reverse (401221312), we get a palindrome (614343416).

The spelling of 213122104 in words is "two hundred thirteen million, one hundred twenty-two thousand, one hundred four".