213120104 has 8 divisors (see below), whose sum is σ = 399600210. Its totient is φ = 106560048.

The previous prime is 213120029. The next prime is 213120107. The reversal of 213120104 is 401021312.

It can be written as a sum of positive squares in only one way, i.e., 212868100 + 252004 = 14590^2 + 502^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (213120107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13319999 + ... + 13320014.

Almost surely, 2^213120104 is an apocalyptic number.

It is an amenable number.

213120104 is a deficient number, since it is larger than the sum of its proper divisors (186480106).

213120104 is a wasteful number, since it uses less digits than its factorization.

213120104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26640019 (or 26640015 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 213120104 is about 14598.6336346934. The cubic root of 213120104 is about 597.3214900638.

Adding to 213120104 its reverse (401021312), we get a palindrome (614141416).

The spelling of 213120104 in words is "two hundred thirteen million, one hundred twenty thousand, one hundred four".