211225530430 has 16 divisors (see below), whose sum is σ = 380544537744. Its totient is φ = 84414971520.

The previous prime is 211225530317. The next prime is 211225530457. The reversal of 211225530430 is 34035522112.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9393291 + ... + 9415750.

It is an arithmetic number, because the mean of its divisors is an integer number (23784033609).

Almost surely, 2^211225530430 is an apocalyptic number.

211225530430 is a deficient number, since it is larger than the sum of its proper divisors (169319007314).

211225530430 is a wasteful number, since it uses less digits than its factorization.

211225530430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18810171.

The product of its (nonzero) digits is 7200, while the sum is 28.

The spelling of 211225530430 in words is "two hundred eleven billion, two hundred twenty-five million, five hundred thirty thousand, four hundred thirty".