112020101021 has 4 divisors (see below), whose sum is σ = 112373477052. Its totient is φ = 111666724992.

The previous prime is 112020100949. The next prime is 112020101033. The reversal of 112020101021 is 120101020211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 120101020211 = 131 ⋅916801681.

It can be written as a sum of positive squares in 2 ways, for example, as 22167040996 + 89853060025 = 148886^2 + 299755^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-112020101021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 112020100993 and 112020101011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112020101321) 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, 176687540 + ... + 176688173.

It is an arithmetic number, because the mean of its divisors is an integer number (28093369263).

Almost surely, 2^112020101021 is an apocalyptic number.

It is an amenable number.

112020101021 is a deficient number, since it is larger than the sum of its proper divisors (353376031).

112020101021 is an equidigital number, since it uses as much as digits as its factorization.

112020101021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 353376030.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 112020101021 its reverse (120101020211), we get a palindrome (232121121232).

The spelling of 112020101021 in words is "one hundred twelve billion, twenty million, one hundred one thousand, twenty-one".