112111220210021 has 8 divisors (see below), whose sum is σ = 118706510041560. Its totient is φ = 105515987286528.

The previous prime is 112111220209951. The next prime is 112111220210051. The reversal of 112111220210021 is 120012022111211.

It can be written as a sum of positive squares in 4 ways, for example, as 98817794829796 + 13293425380225 = 9940714^2 + 3646015^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-112111220210021 is a prime.

It is a super-2 number, since 2×112111220210021² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112111220210051) 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, 10137446 + ... + 18082871.

It is an arithmetic number, because the mean of its divisors is an integer number (14838313755195).

Almost surely, 2^{112111220210021} is an apocalyptic number.

It is an amenable number.

112111220210021 is a deficient number, since it is larger than the sum of its proper divisors (6595289831539).

112111220210021 is a wasteful number, since it uses less digits than its factorization.

112111220210021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28454023.

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

Adding to 112111220210021 its reverse (120012022111211), we get a palindrome (232123242321232).

The spelling of 112111220210021 in words is "one hundred twelve trillion, one hundred eleven billion, two hundred twenty million, two hundred ten thousand, twenty-one".