2120103033221 has 2 divisors, whose sum is σ = 2120103033222. Its totient is φ = 2120103033220.

The previous prime is 2120103033161. The next prime is 2120103033259. The reversal of 2120103033221 is 1223303010212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1934363582596 + 185739450625 = 1390814^2 + 430975^2 .

It is a cyclic number.

It is not a de Polignac number, because 2120103033221 - 2¹⁸ = 2120102771077 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2120103033193 and 2120103033202.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2120103033281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060051516610 + 1060051516611.

It is an arithmetic number, because the mean of its divisors is an integer number (1060051516611).

Almost surely, 2^{2120103033221} is an apocalyptic number.

It is an amenable number.

2120103033221 is a deficient number, since it is larger than the sum of its proper divisors (1).

2120103033221 is an equidigital number, since it uses as much as digits as its factorization.

2120103033221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 2120103033221 its reverse (1223303010212), we get a palindrome (3343406043433).

The spelling of 2120103033221 in words is "two trillion, one hundred twenty billion, one hundred three million, thirty-three thousand, two hundred twenty-one".