111220021121001 has 8 divisors (see below), whose sum is σ = 159700543148160. Its totient is φ = 68443089920592.

The previous prime is 111220021120997. The next prime is 111220021121051. The reversal of 111220021121001 is 100121120022111.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 111220021121001 - 2² = 111220021120997 is a prime.

It is not an unprimeable number, because it can be changed into a prime (111220021121051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1425897706641 + ... + 1425897706718.

It is an arithmetic number, because the mean of its divisors is an integer number (19962567893520).

Almost surely, 2^{111220021121001} is an apocalyptic number.

It is an amenable number.

111220021121001 is a deficient number, since it is larger than the sum of its proper divisors (48480522027159).

111220021121001 is a wasteful number, since it uses less digits than its factorization.

111220021121001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2851795413375.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 111220021121001 its reverse (100121120022111), we get a palindrome (211341141143112).

The spelling of 111220021121001 in words is "one hundred eleven trillion, two hundred twenty billion, twenty-one million, one hundred twenty-one thousand, one".