2211022345231 has 4 divisors (see below), whose sum is σ = 2526882680272. Its totient is φ = 1895162010192.

The previous prime is 2211022345151. The next prime is 2211022345241. The reversal of 2211022345231 is 1325432201122.

It is a happy number.

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-2211022345231 is a prime.

It is a super-2 number, since 2×2211022345231² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2211022345231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2211022345241) 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, 157930167510 + ... + 157930167523.

It is an arithmetic number, because the mean of its divisors is an integer number (631720670068).

Almost surely, 2^{2211022345231} is an apocalyptic number.

2211022345231 is a deficient number, since it is larger than the sum of its proper divisors (315860335041).

2211022345231 is an equidigital number, since it uses as much as digits as its factorization.

2211022345231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 315860335040.

The product of its (nonzero) digits is 5760, while the sum is 28.

Adding to 2211022345231 its reverse (1325432201122), we get a palindrome (3536454546353).

The spelling of 2211022345231 in words is "two trillion, two hundred eleven billion, twenty-two million, three hundred forty-five thousand, two hundred thirty-one".