213120030001 has 4 divisors (see below), whose sum is σ = 225656502372. Its totient is φ = 200583557632.

The previous prime is 213120029999. The next prime is 213120030077. The reversal of 213120030001 is 100030021312.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 141132456976 + 71987573025 = 375676^2 + 268305^2 .

It is a cyclic number.

It is not a de Polignac number, because 213120030001 - 2¹ = 213120029999 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213120030401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6268236160 + ... + 6268236193.

It is an arithmetic number, because the mean of its divisors is an integer number (56414125593).

Almost surely, 2^213120030001 is an apocalyptic number.

It is an amenable number.

213120030001 is a deficient number, since it is larger than the sum of its proper divisors (12536472371).

213120030001 is a wasteful number, since it uses less digits than its factorization.

213120030001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12536472370.

The product of its (nonzero) digits is 36, while the sum is 13.

Adding to 213120030001 its reverse (100030021312), we get a palindrome (313150051313).

The spelling of 213120030001 in words is "two hundred thirteen billion, one hundred twenty million, thirty thousand, one".