2110201211281 has 2 divisors, whose sum is σ = 2110201211282. Its totient is φ = 2110201211280.

The previous prime is 2110201211201. The next prime is 2110201211347. The reversal of 2110201211281 is 1821121020112.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1795642880256 + 314558331025 = 1340016^2 + 560855^2 .

It is a cyclic number.

It is not a de Polignac number, because 2110201211281 - 2¹⁷ = 2110201080209 is a prime.

It is a super-2 number, since 2×2110201211281² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2110201211201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1055100605640 + 1055100605641.

It is an arithmetic number, because the mean of its divisors is an integer number (1055100605641).

Almost surely, 2^{2110201211281} is an apocalyptic number.

It is an amenable number.

2110201211281 is a deficient number, since it is larger than the sum of its proper divisors (1).

2110201211281 is an equidigital number, since it uses as much as digits as its factorization.

2110201211281 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 128, while the sum is 22.

Adding to 2110201211281 its reverse (1821121020112), we get a palindrome (3931322231393).

The spelling of 2110201211281 in words is "two trillion, one hundred ten billion, two hundred one million, two hundred eleven thousand, two hundred eighty-one".