2122020281 has 2 divisors, whose sum is σ = 2122020282. Its totient is φ = 2122020280.

The previous prime is 2122020269. The next prime is 2122020293. The reversal of 2122020281 is 1820202212.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (2122020269) and next prime (2122020293).

It can be written as a sum of positive squares in only one way, i.e., 1895818681 + 226201600 = 43541^2 + 15040^2 .

It is a cyclic number.

It is not a de Polignac number, because 2122020281 - 2⁶ = 2122020217 is a prime.

It is a super-2 number, since 2×2122020281² = 9005940145950637922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2122025281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1061010140 + 1061010141.

It is an arithmetic number, because the mean of its divisors is an integer number (1061010141).

Almost surely, 2^2122020281 is an apocalyptic number.

It is an amenable number.

2122020281 is a deficient number, since it is larger than the sum of its proper divisors (1).

2122020281 is an equidigital number, since it uses as much as digits as its factorization.

2122020281 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 256, while the sum is 20.

The square root of 2122020281 is about 46065.3913583723. The cubic root of 2122020281 is about 1285.0395968560.

Adding to 2122020281 its reverse (1820202212), we get a palindrome (3942222493).

The spelling of 2122020281 in words is "two billion, one hundred twenty-two million, twenty thousand, two hundred eighty-one".