111333220645 has 4 divisors (see below), whose sum is σ = 133599864780. Its totient is φ = 89066576512.

The previous prime is 111333220637. The next prime is 111333220703. The reversal of 111333220645 is 546022333111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 546022333111 = 761 ⋅717506351.

It can be written as a sum of positive squares in 2 ways, for example, as 32179336996 + 79153883649 = 179386^2 + 281343^2 .

It is a cyclic number.

It is not a de Polignac number, because 111333220645 - 2³ = 111333220637 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11133322060 + ... + 11133322069.

It is an arithmetic number, because the mean of its divisors is an integer number (33399966195).

Almost surely, 2^111333220645 is an apocalyptic number.

It is an amenable number.

111333220645 is a deficient number, since it is larger than the sum of its proper divisors (22266644135).

111333220645 is an equidigital number, since it uses as much as digits as its factorization.

111333220645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22266644134.

The product of its (nonzero) digits is 12960, while the sum is 31.

Adding to 111333220645 its reverse (546022333111), we get a palindrome (657355553756).

The spelling of 111333220645 in words is "one hundred eleven billion, three hundred thirty-three million, two hundred twenty thousand, six hundred forty-five".