2122022110261 has 2 divisors, whose sum is σ = 2122022110262. Its totient is φ = 2122022110260.

The previous prime is 2122022110193. The next prime is 2122022110279. The reversal of 2122022110261 is 1620112202212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1389791063236 + 732231047025 = 1178894^2 + 855705^2 .

It is a cyclic number.

It is not a de Polignac number, because 2122022110261 - 2²¹ = 2122020013109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2122026110261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1061011055130 + 1061011055131.

It is an arithmetic number, because the mean of its divisors is an integer number (1061011055131).

Almost surely, 2^{2122022110261} is an apocalyptic number.

It is an amenable number.

2122022110261 is a deficient number, since it is larger than the sum of its proper divisors (1).

2122022110261 is an equidigital number, since it uses as much as digits as its factorization.

2122022110261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 384, while the sum is 22.

Adding to 2122022110261 its reverse (1620112202212), we get a palindrome (3742134312473).

The spelling of 2122022110261 in words is "two trillion, one hundred twenty-two billion, twenty-two million, one hundred ten thousand, two hundred sixty-one".