213120320104 has 8 divisors (see below), whose sum is σ = 399600600210. Its totient is φ = 106560160048.

The previous prime is 213120320099. The next prime is 213120320117. The reversal of 213120320104 is 401023021312.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 194948740900 + 18171579204 = 441530^2 + 134802^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13320019999 + ... + 13320020014.

Almost surely, 2^213120320104 is an apocalyptic number.

It is an amenable number.

213120320104 is a deficient number, since it is larger than the sum of its proper divisors (186480280106).

213120320104 is a wasteful number, since it uses less digits than its factorization.

213120320104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26640040019 (or 26640040015 counting only the distinct ones).

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

Adding to 213120320104 its reverse (401023021312), we get a palindrome (614143341416).

The spelling of 213120320104 in words is "two hundred thirteen billion, one hundred twenty million, three hundred twenty thousand, one hundred four".