2311012022111 has 8 divisors (see below), whose sum is σ = 2492205547104. Its totient is φ = 2130307549920.

The previous prime is 2311012022093. The next prime is 2311012022131. The reversal of 2311012022111 is 1112202101132.

It is a happy number.

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-2311012022111 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2311012022111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2311012022131) 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, 122253380 + ... + 122272281.

It is an arithmetic number, because the mean of its divisors is an integer number (311525693388).

Almost surely, 2^{2311012022111} is an apocalyptic number.

2311012022111 is a deficient number, since it is larger than the sum of its proper divisors (181193524993).

2311012022111 is a wasteful number, since it uses less digits than its factorization.

2311012022111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244526401.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 2311012022111 its reverse (1112202101132), we get a palindrome (3423214123243).

The spelling of 2311012022111 in words is "two trillion, three hundred eleven billion, twelve million, twenty-two thousand, one hundred eleven".