213120004 has 6 divisors (see below), whose sum is σ = 372960014. Its totient is φ = 106560000.

The previous prime is 213119993. The next prime is 213120029. The reversal of 213120004 is 400021312.

It can be written as a sum of positive squares in only one way, i.e., 172134400 + 40985604 = 13120^2 + 6402^2 .

It is a super-2 number, since 2×213120004² = 90840272209920032, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26639997 + ... + 26640004.

Almost surely, 2^213120004 is an apocalyptic number.

It is an amenable number.

213120004 is a deficient number, since it is larger than the sum of its proper divisors (159840010).

213120004 is a wasteful number, since it uses less digits than its factorization.

213120004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53280005 (or 53280003 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 213120004 is about 14598.6302097149. The cubic root of 213120004 is about 597.3213966389.

Adding to 213120004 its reverse (400021312), we get a palindrome (613141316).

The spelling of 213120004 in words is "two hundred thirteen million, one hundred twenty thousand, four".