2112100103221 has 2 divisors, whose sum is σ = 2112100103222. Its totient is φ = 2112100103220.

The previous prime is 2112100103209. The next prime is 2112100103249. The reversal of 2112100103221 is 1223010012112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1066859686321 + 1045240416900 = 1032889^2 + 1022370^2 .

It is a cyclic number.

It is not a de Polignac number, because 2112100103221 - 2²³ = 2112091714613 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2112100103195 and 2112100103204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2112100103261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1056050051610 + 1056050051611.

It is an arithmetic number, because the mean of its divisors is an integer number (1056050051611).

Almost surely, 2^{2112100103221} is an apocalyptic number.

It is an amenable number.

2112100103221 is a deficient number, since it is larger than the sum of its proper divisors (1).

2112100103221 is an equidigital number, since it uses as much as digits as its factorization.

2112100103221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 2112100103221 its reverse (1223010012112), we get a palindrome (3335110115333).

The spelling of 2112100103221 in words is "two trillion, one hundred twelve billion, one hundred million, one hundred three thousand, two hundred twenty-one".