2043112612221 has 6 divisors (see below), whose sum is σ = 2951162662110. Its totient is φ = 1362075074808.

The previous prime is 2043112612213. The next prime is 2043112612313. The reversal of 2043112612221 is 1222162113402.

2043112612221 is a `hidden beast` number, since 2 + 0 + 4 + 31 + 12 + 612 + 2 + 2 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1764208215225 + 278904396996 = 1328235^2 + 528114^2 .

It is not a de Polignac number, because 2043112612221 - 2³ = 2043112612213 is a prime.

It is a super-3 number, since 3×2043112612221³ (a number of 38 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2043112602221) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 113506256226 + ... + 113506256243.

It is an arithmetic number, because the mean of its divisors is an integer number (491860443685).

Almost surely, 2^{2043112612221} is an apocalyptic number.

It is an amenable number.

2043112612221 is a deficient number, since it is larger than the sum of its proper divisors (908050049889).

2043112612221 is a wasteful number, since it uses less digits than its factorization.

2043112612221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227012512475 (or 227012512472 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

Adding to 2043112612221 its reverse (1222162113402), we get a palindrome (3265274725623).

The spelling of 2043112612221 in words is "two trillion, forty-three billion, one hundred twelve million, six hundred twelve thousand, two hundred twenty-one".