2012020112021 has 4 divisors (see below), whose sum is σ = 2029825599852. Its totient is φ = 1994214624192.

The previous prime is 2012020112009. The next prime is 2012020112033. The reversal of 2012020112021 is 1202110202102.

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 (2012020112009) and next prime (2012020112033).

It can be written as a sum of positive squares in 2 ways, for example, as 17185899025 + 1994834212996 = 131095^2 + 1412386^2 .

It is a cyclic number.

It is not a de Polignac number, because 2012020112021 - 2¹⁴ = 2012020095637 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2012020111987 and 2012020112005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2012020172021) 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, 8902743746 + ... + 8902743971.

It is an arithmetic number, because the mean of its divisors is an integer number (507456399963).

Almost surely, 2^{2012020112021} is an apocalyptic number.

It is an amenable number.

2012020112021 is a deficient number, since it is larger than the sum of its proper divisors (17805487831).

2012020112021 is a wasteful number, since it uses less digits than its factorization.

2012020112021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17805487830.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 2012020112021 its reverse (1202110202102), we get a palindrome (3214130314123).

The spelling of 2012020112021 in words is "two trillion, twelve billion, twenty million, one hundred twelve thousand, twenty-one".