121201211029 has 2 divisors, whose sum is σ = 121201211030. Its totient is φ = 121201211028.

The previous prime is 121201211023. The next prime is 121201211123. The reversal of 121201211029 is 920112102121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 121197978225 + 3232804 = 348135^2 + 1798^2 .

It is a cyclic number.

It is not a de Polignac number, because 121201211029 - 2¹⁵ = 121201178261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121201211023) 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, 60600605514 + 60600605515.

It is an arithmetic number, because the mean of its divisors is an integer number (60600605515).

Almost surely, 2^121201211029 is an apocalyptic number.

It is an amenable number.

121201211029 is a deficient number, since it is larger than the sum of its proper divisors (1).

121201211029 is an equidigital number, since it uses as much as digits as its factorization.

121201211029 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 22.

The spelling of 121201211029 in words is "one hundred twenty-one billion, two hundred one million, two hundred eleven thousand, twenty-nine".