2211303212231 has 8 divisors (see below), whose sum is σ = 2343272682960. Its totient is φ = 2079544053888.

The previous prime is 2211303212203. The next prime is 2211303212243. The reversal of 2211303212231 is 1322123031122.

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-2211303212231 is a prime.

It is a super-2 number, since 2×2211303212231² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2211303212197 and 2211303212206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2211303214231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52556441 + ... + 52598498.

It is an arithmetic number, because the mean of its divisors is an integer number (292909085370).

Almost surely, 2^{2211303212231} is an apocalyptic number.

2211303212231 is a deficient number, since it is larger than the sum of its proper divisors (131969470729).

2211303212231 is a wasteful number, since it uses less digits than its factorization.

2211303212231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105156193.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 2211303212231 its reverse (1322123031122), we get a palindrome (3533426243353).

The spelling of 2211303212231 in words is "two trillion, two hundred eleven billion, three hundred three million, two hundred twelve thousand, two hundred thirty-one".