211232531100051 has 6 divisors (see below), whose sum is σ = 305113656033420. Its totient is φ = 140821687400028.

The previous prime is 211232531100013. The next prime is 211232531100053. The reversal of 211232531100051 is 150001135232112.

211232531100051 is a `hidden beast` number, since 2 + 1 + 1 + 23 + 2 + 531 + 100 + 0 + 5 + 1 = 666.

It is not a de Polignac number, because 211232531100051 - 2¹⁰ = 211232531099027 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 211232531099988 and 211232531100024.

It is not an unprimeable number, because it can be changed into a prime (211232531100053) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11735140616661 + ... + 11735140616678.

It is an arithmetic number, because the mean of its divisors is an integer number (50852276005570).

Almost surely, 2^{211232531100051} is an apocalyptic number.

211232531100051 is a deficient number, since it is larger than the sum of its proper divisors (93881124933369).

211232531100051 is a wasteful number, since it uses less digits than its factorization.

211232531100051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23470281233345 (or 23470281233342 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 27.

Adding to 211232531100051 its reverse (150001135232112), we get a palindrome (361233666332163).

The spelling of 211232531100051 in words is "two hundred eleven trillion, two hundred thirty-two billion, five hundred thirty-one million, one hundred thousand, fifty-one".