2211111011231 has 8 divisors (see below), whose sum is σ = 2339671065600. Its totient is φ = 2083769535960.

The previous prime is 2211111011227. The next prime is 2211111011233. The reversal of 2211111011231 is 1321101111122.

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

It is not a de Polignac number, because 2211111011231 - 2² = 2211111011227 is a prime.

It is a super-2 number, since 2×2211111011231² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2211111011233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 304641041 + ... + 304648298.

It is an arithmetic number, because the mean of its divisors is an integer number (292458883200).

Almost surely, 2^{2211111011231} is an apocalyptic number.

2211111011231 is a deficient number, since it is larger than the sum of its proper divisors (128560054369).

2211111011231 is a wasteful number, since it uses less digits than its factorization.

2211111011231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 609289549.

The product of its (nonzero) digits is 24, while the sum is 17.

Adding to 2211111011231 its reverse (1321101111122), we get a palindrome (3532212122353).

The spelling of 2211111011231 in words is "two trillion, two hundred eleven billion, one hundred eleven million, eleven thousand, two hundred thirty-one".