2122000222261 has 2 divisors, whose sum is σ = 2122000222262. Its totient is φ = 2122000222260.

The previous prime is 2122000222163. The next prime is 2122000222271. The reversal of 2122000222261 is 1622220002212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1108945894225 + 1013054328036 = 1053065^2 + 1006506^2 .

It is a cyclic number.

It is not a de Polignac number, because 2122000222261 - 2¹⁹ = 2121999697973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2122000222271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1061000111130 + 1061000111131.

It is an arithmetic number, because the mean of its divisors is an integer number (1061000111131).

Almost surely, 2^{2122000222261} is an apocalyptic number.

It is an amenable number.

2122000222261 is a deficient number, since it is larger than the sum of its proper divisors (1).

2122000222261 is an equidigital number, since it uses as much as digits as its factorization.

2122000222261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 2122000222261 its reverse (1622220002212), we get a palindrome (3744220224473).

The spelling of 2122000222261 in words is "two trillion, one hundred twenty-two billion, two hundred twenty-two thousand, two hundred sixty-one".