2112020201021 has 16 divisors (see below), whose sum is σ = 2256509251584. Its totient is φ = 1969818165504.

The previous prime is 2112020200991. The next prime is 2112020201051. The reversal of 2112020201021 is 1201020202112.

It is an interprime number because it is at equal distance from previous prime (2112020200991) and next prime (2112020201051).

It is a cyclic number.

It is not a de Polignac number, because 2112020201021 - 2¹⁰ = 2112020199997 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2112020200987 and 2112020201005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2112020201051) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1268216 + ... + 2415038.

It is an arithmetic number, because the mean of its divisors is an integer number (141031828224).

Almost surely, 2^{2112020201021} is an apocalyptic number.

It is an amenable number.

2112020201021 is a deficient number, since it is larger than the sum of its proper divisors (144489050563).

2112020201021 is a wasteful number, since it uses less digits than its factorization.

2112020201021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1147820.

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

Adding to 2112020201021 its reverse (1201020202112), we get a palindrome (3313040403133).

The spelling of 2112020201021 in words is "two trillion, one hundred twelve billion, twenty million, two hundred one thousand, twenty-one".