122100552251 has 2 divisors, whose sum is σ = 122100552252. Its totient is φ = 122100552250.

The previous prime is 122100552241. The next prime is 122100552263. The reversal of 122100552251 is 152255001221.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 122100552251 - 2¹⁰ = 122100551227 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 122100552251.

It is not a weakly prime, because it can be changed into another prime (122100552241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61050276125 + 61050276126.

It is an arithmetic number, because the mean of its divisors is an integer number (61050276126).

Almost surely, 2^122100552251 is an apocalyptic number.

122100552251 is a deficient number, since it is larger than the sum of its proper divisors (1).

122100552251 is an equidigital number, since it uses as much as digits as its factorization.

122100552251 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2000, while the sum is 26.

Adding to 122100552251 its reverse (152255001221), we get a palindrome (274355553472).

The spelling of 122100552251 in words is "one hundred twenty-two billion, one hundred million, five hundred fifty-two thousand, two hundred fifty-one".