121021011001249 has 2 divisors, whose sum is σ = 121021011001250. Its totient is φ = 121021011001248.

The previous prime is 121021011001103. The next prime is 121021011001259. The reversal of 121021011001249 is 942100110120121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 89025697527649 + 31995313473600 = 9435343^2 + 5656440^2 .

It is a cyclic number.

It is not a de Polignac number, because 121021011001249 - 2⁴⁵ = 85836638912417 is a prime.

It is not a weakly prime, because it can be changed into another prime (121021011001259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60510505500624 + 60510505500625.

It is an arithmetic number, because the mean of its divisors is an integer number (60510505500625).

Almost surely, 2^{121021011001249} is an apocalyptic number.

It is an amenable number.

121021011001249 is a deficient number, since it is larger than the sum of its proper divisors (1).

121021011001249 is an equidigital number, since it uses as much as digits as its factorization.

121021011001249 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 25.

The spelling of 121021011001249 in words is "one hundred twenty-one trillion, twenty-one billion, eleven million, one thousand, two hundred forty-nine".