111221211211001 has 8 divisors (see below), whose sum is σ = 113945273232000. Its totient is φ = 108497689644960.

The previous prime is 111221211210983. The next prime is 111221211211043. The reversal of 111221211211001 is 100112112122111.

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 111221211211001 - 2³⁴ = 111204031341817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111221211211051) 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, 134697101 + ... + 135520298.

It is an arithmetic number, because the mean of its divisors is an integer number (14243159154000).

Almost surely, 2^{111221211211001} is an apocalyptic number.

It is an amenable number.

111221211211001 is a deficient number, since it is larger than the sum of its proper divisors (2724062020999).

111221211211001 is a wasteful number, since it uses less digits than its factorization.

111221211211001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270227479.

The product of its (nonzero) digits is 16, while the sum is 17.

Adding to 111221211211001 its reverse (100112112122111), we get a palindrome (211333323333112).

The spelling of 111221211211001 in words is "one hundred eleven trillion, two hundred twenty-one billion, two hundred eleven million, two hundred eleven thousand, one".