1112020201021 has 4 divisors (see below), whose sum is σ = 1130250040444. Its totient is φ = 1093790361600.

The previous prime is 1112020200961. The next prime is 1112020201081. The reversal of 1112020201021 is 1201020202111.

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

It is an interprime number because it is at equal distance from previous prime (1112020200961) and next prime (1112020201081).

It can be written as a sum of positive squares in 2 ways, for example, as 493170512121 + 618849688900 = 702261^2 + 786670^2 .

It is a cyclic number.

It is not a de Polignac number, because 1112020201021 - 2²⁷ = 1111885983293 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1112020200992 and 1112020201010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1112020201081) 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, 9114919620 + ... + 9114919741.

It is an arithmetic number, because the mean of its divisors is an integer number (282562510111).

Almost surely, 2^{1112020201021} is an apocalyptic number.

It is an amenable number.

1112020201021 is a deficient number, since it is larger than the sum of its proper divisors (18229839423).

1112020201021 is an equidigital number, since it uses as much as digits as its factorization.

1112020201021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18229839422.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1112020201021 its reverse (1201020202111), we get a palindrome (2313040403132).

The spelling of 1112020201021 in words is "one trillion, one hundred twelve billion, twenty million, two hundred one thousand, twenty-one".