2112201112021 has 32 divisors (see below), whose sum is σ = 2839566901248. Its totient is φ = 1517334517440.

The previous prime is 2112201112019. The next prime is 2112201112051. The reversal of 2112201112021 is 1202111022112.

It is not a de Polignac number, because 2112201112021 - 2¹ = 2112201112019 is a prime.

It is a super-2 number, since 2×2112201112021² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2112201111986 and 2112201112004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2112201112051) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 552805 + ... + 2128378.

It is an arithmetic number, because the mean of its divisors is an integer number (88736465664).

Almost surely, 2^{2112201112021} is an apocalyptic number.

It is an amenable number.

2112201112021 is a deficient number, since it is larger than the sum of its proper divisors (727365789227).

2112201112021 is a wasteful number, since it uses less digits than its factorization.

2112201112021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2682001.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 2112201112021 its reverse (1202111022112), we get a palindrome (3314312134133).

It can be divided in two parts, 2112201 and 112021, that added together give a palindrome (2224222).

The spelling of 2112201112021 in words is "two trillion, one hundred twelve billion, two hundred one million, one hundred twelve thousand, twenty-one".