121020001229 has 2 divisors, whose sum is σ = 121020001230. Its totient is φ = 121020001228.

The previous prime is 121020001129. The next prime is 121020001261. The reversal of 121020001229 is 922100020121.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 80427825604 + 40592175625 = 283598^2 + 201475^2 .

It is a cyclic number.

It is not a de Polignac number, because 121020001229 - 2⁸ = 121020000973 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 121020001229.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121020001129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60510000614 + 60510000615.

It is an arithmetic number, because the mean of its divisors is an integer number (60510000615).

Almost surely, 2^121020001229 is an apocalyptic number.

It is an amenable number.

121020001229 is a deficient number, since it is larger than the sum of its proper divisors (1).

121020001229 is an equidigital number, since it uses as much as digits as its factorization.

121020001229 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 20.

The spelling of 121020001229 in words is "one hundred twenty-one billion, twenty million, one thousand, two hundred twenty-nine".