121250212233121 has 2 divisors, whose sum is σ = 121250212233122. Its totient is φ = 121250212233120.

The previous prime is 121250212233107. The next prime is 121250212233191. The reversal of 121250212233121 is 121332212052121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 97276106008225 + 23974106224896 = 9862865^2 + 4896336^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121250212233121 is a prime.

It is a super-2 number, since 2×121250212233121² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 121250212233121.

It is not a weakly prime, because it can be changed into another prime (121250212233191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60625106116560 + 60625106116561.

It is an arithmetic number, because the mean of its divisors is an integer number (60625106116561).

Almost surely, 2^{121250212233121} is an apocalyptic number.

It is an amenable number.

121250212233121 is a deficient number, since it is larger than the sum of its proper divisors (1).

121250212233121 is an equidigital number, since it uses as much as digits as its factorization.

121250212233121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2880, while the sum is 28.

Adding to 121250212233121 its reverse (121332212052121), we get a palindrome (242582424285242).

The spelling of 121250212233121 in words is "one hundred twenty-one trillion, two hundred fifty billion, two hundred twelve million, two hundred thirty-three thousand, one hundred twenty-one".