111203166557 has 8 divisors (see below), whose sum is σ = 127649199936. Its totient is φ = 94897099872.

The previous prime is 111203166553. The next prime is 111203166653. The reversal of 111203166557 is 755661302111.

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 not a de Polignac number, because 111203166557 - 2² = 111203166553 is a prime.

It is a super-2 number, since 2×111203166557² (a number of 23 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 111203166557.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111203166553) 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, 34989968 + ... + 34993145.

It is an arithmetic number, because the mean of its divisors is an integer number (15956149992).

Almost surely, 2^111203166557 is an apocalyptic number.

It is an amenable number.

111203166557 is a deficient number, since it is larger than the sum of its proper divisors (16446033379).

111203166557 is an equidigital number, since it uses as much as digits as its factorization.

111203166557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69983347.

The product of its (nonzero) digits is 37800, while the sum is 38.

Adding to 111203166557 its reverse (755661302111), we get a palindrome (866864468668).

The spelling of 111203166557 in words is "one hundred eleven billion, two hundred three million, one hundred sixty-six thousand, five hundred fifty-seven".