121222100249 has 2 divisors, whose sum is σ = 121222100250. Its totient is φ = 121222100248.

The previous prime is 121222100221. The next prime is 121222100257. The reversal of 121222100249 is 942001222121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 67648368649 + 53573731600 = 260093^2 + 231460^2 .

It is a cyclic number.

It is not a de Polignac number, because 121222100249 - 2⁸ = 121222099993 is a prime.

It is not a weakly prime, because it can be changed into another prime (121222106249) 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, 60611050124 + 60611050125.

It is an arithmetic number, because the mean of its divisors is an integer number (60611050125).

Almost surely, 2^121222100249 is an apocalyptic number.

It is an amenable number.

121222100249 is a deficient number, since it is larger than the sum of its proper divisors (1).

121222100249 is an equidigital number, since it uses as much as digits as its factorization.

121222100249 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 26.

The spelling of 121222100249 in words is "one hundred twenty-one billion, two hundred twenty-two million, one hundred thousand, two hundred forty-nine".