211223313051 has 16 divisors (see below), whose sum is σ = 291662415360. Its totient is φ = 135810540320.

The previous prime is 211223312957. The next prime is 211223313071. The reversal of 211223313051 is 150313322112.

It is a happy number.

It is not a de Polignac number, because 211223313051 - 2¹⁷ = 211223181979 is a prime.

It is not an unprimeable number, because it can be changed into a prime (211223313071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1253265 + ... + 1411778.

It is an arithmetic number, because the mean of its divisors is an integer number (18228900960).

Almost surely, 2^211223313051 is an apocalyptic number.

211223313051 is a deficient number, since it is larger than the sum of its proper divisors (80439102309).

211223313051 is a wasteful number, since it uses less digits than its factorization.

211223313051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2665986.

The product of its (nonzero) digits is 1080, while the sum is 24.

Adding to 211223313051 its reverse (150313322112), we get a palindrome (361536635163).

The spelling of 211223313051 in words is "two hundred eleven billion, two hundred twenty-three million, three hundred thirteen thousand, fifty-one".