111221002097 has 4 divisors (see below), whose sum is σ = 111258541680. Its totient is φ = 111183462516.

The previous prime is 111221002027. The next prime is 111221002099. The reversal of 111221002097 is 790200122111.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 111221002097 - 2¹² = 111220998001 is a prime.

It is a super-2 number, since 2×111221002097² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111221002099) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18765347 + ... + 18771272.

It is an arithmetic number, because the mean of its divisors is an integer number (27814635420).

Almost surely, 2^111221002097 is an apocalyptic number.

It is an amenable number.

111221002097 is a deficient number, since it is larger than the sum of its proper divisors (37539583).

111221002097 is an equidigital number, since it uses as much as digits as its factorization.

111221002097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37539582.

The product of its (nonzero) digits is 504, while the sum is 26.

The spelling of 111221002097 in words is "one hundred eleven billion, two hundred twenty-one million, two thousand, ninety-seven".