122002011212261 has 2 divisors, whose sum is σ = 122002011212262. Its totient is φ = 122002011212260.

The previous prime is 122002011212189. The next prime is 122002011212269. The reversal of 122002011212261 is 162212110200221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 63390354781636 + 58611656430625 = 7961806^2 + 7655825^2 .

It is an emirp because it is prime and its reverse (162212110200221) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122002011212261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122002011212269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61001005606130 + 61001005606131.

It is an arithmetic number, because the mean of its divisors is an integer number (61001005606131).

Almost surely, 2^{122002011212261} is an apocalyptic number.

It is an amenable number.

122002011212261 is a deficient number, since it is larger than the sum of its proper divisors (1).

122002011212261 is an equidigital number, since it uses as much as digits as its factorization.

122002011212261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384, while the sum is 23.

Adding to 122002011212261 its reverse (162212110200221), we get a palindrome (284214121412482).

The spelling of 122002011212261 in words is "one hundred twenty-two trillion, two billion, eleven million, two hundred twelve thousand, two hundred sixty-one".