11112221122001 has 8 divisors (see below), whose sum is σ = 11470900612608. Its totient is φ = 10753555428000.

The previous prime is 11112221121943. The next prime is 11112221122027. The reversal of 11112221122001 is 10022112221111.

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 11112221122001 - 2¹⁰ = 11112221120977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11112221122031) 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, 1799765 + ... + 5046146.

It is an arithmetic number, because the mean of its divisors is an integer number (1433862576576).

Almost surely, 2^{11112221122001} is an apocalyptic number.

It is an amenable number.

11112221122001 is a deficient number, since it is larger than the sum of its proper divisors (358679490607).

11112221122001 is an equidigital number, since it uses as much as digits as its factorization.

11112221122001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6898303.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 11112221122001 its reverse (10022112221111), we get a palindrome (21134333343112).

The spelling of 11112221122001 in words is "eleven trillion, one hundred twelve billion, two hundred twenty-one million, one hundred twenty-two thousand, one".