211302506451 has 32 divisors (see below), whose sum is σ = 302927897088. Its totient is φ = 130531484160.

The previous prime is 211302506449. The next prime is 211302506489. The reversal of 211302506451 is 154605203112.

It is not a de Polignac number, because 211302506451 - 2¹ = 211302506449 is a prime.

It is not an unprimeable number, because it can be changed into a prime (211302506851) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6589066 + ... + 6621056.

It is an arithmetic number, because the mean of its divisors is an integer number (9466496784).

Almost surely, 2^211302506451 is an apocalyptic number.

211302506451 is a deficient number, since it is larger than the sum of its proper divisors (91625390637).

211302506451 is a wasteful number, since it uses less digits than its factorization.

211302506451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34011.

The product of its (nonzero) digits is 7200, while the sum is 30.

Adding to 211302506451 its reverse (154605203112), we get a palindrome (365907709563).

The spelling of 211302506451 in words is "two hundred eleven billion, three hundred two million, five hundred six thousand, four hundred fifty-one".