213121203332330 has 32 divisors (see below), whose sum is σ = 406783916966736. Its totient is φ = 80115350907904.

The previous prime is 213121203332273. The next prime is 213121203332357. The reversal of 213121203332330 is 33233302121312.

213121203332330 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 213070569781969 + 50633550361 = 14596937^2 + 225019^2 .

It is a junction number, because it is equal to n+sod(n) for n = 213121203332293 and 213121203332302.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 925774229 + ... + 926004408.

Almost surely, 2^{213121203332330} is an apocalyptic number.

213121203332330 is a deficient number, since it is larger than the sum of its proper divisors (193662713634406).

213121203332330 is a wasteful number, since it uses less digits than its factorization.

213121203332330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1851779338.

The product of its (nonzero) digits is 11664, while the sum is 29.

Adding to 213121203332330 its reverse (33233302121312), we get a palindrome (246354505453642).

The spelling of 213121203332330 in words is "two hundred thirteen trillion, one hundred twenty-one billion, two hundred three million, three hundred thirty-two thousand, three hundred thirty".