2211131102231 has 4 divisors (see below), whose sum is σ = 2222242314000. Its totient is φ = 2200019890464.

The previous prime is 2211131102221. The next prime is 2211131102269. The reversal of 2211131102231 is 1322011311122.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2211131102231 is a prime.

It is a super-2 number, since 2×2211131102231² (a number of 25 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 (2211131102221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5555605586 + ... + 5555605983.

It is an arithmetic number, because the mean of its divisors is an integer number (555560578500).

Almost surely, 2^{2211131102231} is an apocalyptic number.

2211131102231 is a deficient number, since it is larger than the sum of its proper divisors (11111211769).

2211131102231 is a wasteful number, since it uses less digits than its factorization.

2211131102231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11111211768.

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 2211131102231 its reverse (1322011311122), we get a palindrome (3533142413353).

The spelling of 2211131102231 in words is "two trillion, two hundred eleven billion, one hundred thirty-one million, one hundred two thousand, two hundred thirty-one".