111121122020001 has 8 divisors (see below), whose sum is σ = 149826231937440. Its totient is φ = 73248380057952.

The previous prime is 111121122019991. The next prime is 111121122020017. The reversal of 111121122020001 is 100020221121111.

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 111121122020001 - 2⁹ = 111121122019489 is a prime.

It is a super-2 number, since 2×111121122020001² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (111121122028001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 208091988535 + ... + 208091989068.

It is an arithmetic number, because the mean of its divisors is an integer number (18728278992180).

Almost surely, 2^{111121122020001} is an apocalyptic number.

It is an amenable number.

111121122020001 is a deficient number, since it is larger than the sum of its proper divisors (38705109917439).

111121122020001 is an equidigital number, since it uses as much as digits as its factorization.

111121122020001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 416183977695.

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

Adding to 111121122020001 its reverse (100020221121111), we get a palindrome (211141343141112).

The spelling of 111121122020001 in words is "one hundred eleven trillion, one hundred twenty-one billion, one hundred twenty-two million, twenty thousand, one".