111222201002001 has 4 divisors (see below), whose sum is σ = 148296268002672. Its totient is φ = 74148134001332.

The previous prime is 111222201001999. The next prime is 111222201002027. The reversal of 111222201002001 is 100200102222111.

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 111222201002001 - 2¹ = 111222201001999 is a prime.

It is not an unprimeable number, because it can be changed into a prime (111222201022001) 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, 18537033500331 + ... + 18537033500336.

It is an arithmetic number, because the mean of its divisors is an integer number (37074067000668).

Almost surely, 2^{111222201002001} is an apocalyptic number.

It is an amenable number.

111222201002001 is a deficient number, since it is larger than the sum of its proper divisors (37074067000671).

111222201002001 is an equidigital number, since it uses as much as digits as its factorization.

111222201002001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37074067000670.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 111222201002001 its reverse (100200102222111), we get a palindrome (211422303224112).

The spelling of 111222201002001 in words is "one hundred eleven trillion, two hundred twenty-two billion, two hundred one million, two thousand, one".