111212202202001 has 4 divisors (see below), whose sum is σ = 111430693758900. Its totient is φ = 110993710645104.

The previous prime is 111212202201983. The next prime is 111212202202019. The reversal of 111212202202001 is 100202202212111.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (111212202201983) and next prime (111212202202019).

It can be written as a sum of positive squares in 2 ways, for example, as 70529746443601 + 40682455758400 = 8398199^2 + 6378280^2 .

It is a cyclic number.

It is not a de Polignac number, because 111212202202001 - 2³⁰ = 111211128460177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111212202202091) 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, 109245777686 + ... + 109245778703.

It is an arithmetic number, because the mean of its divisors is an integer number (27857673439725).

Almost surely, 2^{111212202202001} is an apocalyptic number.

It is an amenable number.

111212202202001 is a deficient number, since it is larger than the sum of its proper divisors (218491556899).

111212202202001 is an equidigital number, since it uses as much as digits as its factorization.

111212202202001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218491556898.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 111212202202001 its reverse (100202202212111), we get a palindrome (211414404414112).

The spelling of 111212202202001 in words is "one hundred eleven trillion, two hundred twelve billion, two hundred two million, two hundred two thousand, one".