11112222011601 has 64 divisors (see below), whose sum is σ = 15479418366720. Its totient is φ = 7085054914560.

The previous prime is 11112222011591. The next prime is 11112222011663. The reversal of 11112222011601 is 10611022221111.

It is not a de Polignac number, because 11112222011601 - 2²¹ = 11112219914449 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11112222091601) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2145628230 + ... + 2145633408.

It is an arithmetic number, because the mean of its divisors is an integer number (241865911980).

Almost surely, 2^{11112222011601} is an apocalyptic number.

It is an amenable number.

11112222011601 is a deficient number, since it is larger than the sum of its proper divisors (4367196355119).

11112222011601 is a wasteful number, since it uses less digits than its factorization.

11112222011601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6706.

The product of its (nonzero) digits is 96, while the sum is 21.

Adding to 11112222011601 its reverse (10611022221111), we get a palindrome (21723244232712).

The spelling of 11112222011601 in words is "eleven trillion, one hundred twelve billion, two hundred twenty-two million, eleven thousand, six hundred one".