211366421634430 has 64 divisors (see below), whose sum is σ = 386183768221440. Its totient is φ = 83281727232000.

The previous prime is 211366421634397. The next prime is 211366421634503. The reversal of 211366421634430 is 34436124663112.

It is a super-2 number, since 2×211366421634430² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4244195530 + ... + 4244245330.

It is an arithmetic number, because the mean of its divisors is an integer number (6034121378460).

Almost surely, 2^{211366421634430} is an apocalyptic number.

211366421634430 is a deficient number, since it is larger than the sum of its proper divisors (174817346587010).

211366421634430 is a wasteful number, since it uses less digits than its factorization.

211366421634430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67765.

The product of its (nonzero) digits is 1492992, while the sum is 46.

The spelling of 211366421634430 in words is "two hundred eleven trillion, three hundred sixty-six billion, four hundred twenty-one million, six hundred thirty-four thousand, four hundred thirty".