2111334431145 has 32 divisors (see below), whose sum is σ = 3495803526144. Its totient is φ = 1087003392000.

The previous prime is 2111334431137. The next prime is 2111334431183. The reversal of 2111334431145 is 5411344331112.

It is a happy number.

It is not a de Polignac number, because 2111334431145 - 2³ = 2111334431137 is a prime.

It is a super-2 number, since 2×2111334431145² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5475012 + ... + 5847941.

It is an arithmetic number, because the mean of its divisors is an integer number (109243860192).

Almost surely, 2^{2111334431145} is an apocalyptic number.

It is an amenable number.

2111334431145 is a deficient number, since it is larger than the sum of its proper divisors (1384469094999).

2111334431145 is a wasteful number, since it uses less digits than its factorization.

2111334431145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11323393.

The product of its digits is 17280, while the sum is 33.

Adding to 2111334431145 its reverse (5411344331112), we get a palindrome (7522678762257).

The spelling of 2111334431145 in words is "two trillion, one hundred eleven billion, three hundred thirty-four million, four hundred thirty-one thousand, one hundred forty-five".