111212100997 has 8 divisors (see below), whose sum is σ = 116170755840. Its totient is φ = 106263725040.

The previous prime is 111212100991. The next prime is 111212101003. The reversal of 111212100997 is 799001212111.

It is an interprime number because it is at equal distance from previous prime (111212100991) and next prime (111212101003).

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 111212100997 - 2⁷ = 111212100869 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111212100991) 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, 2547597 + ... + 2590882.

It is an arithmetic number, because the mean of its divisors is an integer number (14521344480).

Almost surely, 2^111212100997 is an apocalyptic number.

It is an amenable number.

111212100997 is a deficient number, since it is larger than the sum of its proper divisors (4958654843).

111212100997 is an equidigital number, since it uses as much as digits as its factorization.

111212100997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5139443.

The product of its (nonzero) digits is 2268, while the sum is 34.

The spelling of 111212100997 in words is "one hundred eleven billion, two hundred twelve million, one hundred thousand, nine hundred ninety-seven".