112002021220021 has 4 divisors (see below), whose sum is σ = 118590375409452. Its totient is φ = 105413667030592.

The previous prime is 112002021220007. The next prime is 112002021220031. The reversal of 112002021220021 is 120022120200211.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 89315995109796 + 22686026110225 = 9450714^2 + 4762985^2 .

It is not a de Polignac number, because 112002021220021 - 2³⁹ = 111452265406133 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 112002021219977 and 112002021220004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112002021220031) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3294177094690 + ... + 3294177094723.

It is an arithmetic number, because the mean of its divisors is an integer number (29647593852363).

Almost surely, 2^{112002021220021} is an apocalyptic number.

It is an amenable number.

112002021220021 is a deficient number, since it is larger than the sum of its proper divisors (6588354189431).

112002021220021 is an equidigital number, since it uses as much as digits as its factorization.

112002021220021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6588354189430.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 112002021220021 its reverse (120022120200211), we get a palindrome (232024141420232).

The spelling of 112002021220021 in words is "one hundred twelve trillion, two billion, twenty-one million, two hundred twenty thousand, twenty-one".