211641226051231 has 8 divisors (see below), whose sum is σ = 211747097816064. Its totient is φ = 211535377219320.

The previous prime is 211641226051201. The next prime is 211641226051243. The reversal of 211641226051231 is 132150622146112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-211641226051231 is a prime.

It is a super-2 number, since 2×211641226051231² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211641226051201) 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 7 ways as a sum of consecutive naturals, for example, 12743686 + ... + 24200908.

It is an arithmetic number, because the mean of its divisors is an integer number (26468387227008).

Almost surely, 2^{211641226051231} is an apocalyptic number.

211641226051231 is a deficient number, since it is larger than the sum of its proper divisors (105871764833).

211641226051231 is a wasteful number, since it uses less digits than its factorization.

211641226051231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11466461.

The product of its (nonzero) digits is 34560, while the sum is 37.

Adding to 211641226051231 its reverse (132150622146112), we get a palindrome (343791848197343).

The spelling of 211641226051231 in words is "two hundred eleven trillion, six hundred forty-one billion, two hundred twenty-six million, fifty-one thousand, two hundred thirty-one".