121211573329 has 16 divisors (see below), whose sum is σ = 159074657280. Its totient is φ = 89479492560.

The previous prime is 121211573321. The next prime is 121211573339. The reversal of 121211573329 is 923375112121.

It is a cyclic number.

It is not a de Polignac number, because 121211573329 - 2³ = 121211573321 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121211573321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41424229 + ... + 41427154.

It is an arithmetic number, because the mean of its divisors is an integer number (9942166080).

Almost surely, 2^121211573329 is an apocalyptic number.

121211573329 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

121211573329 is a deficient number, since it is larger than the sum of its proper divisors (37863083951).

121211573329 is a wasteful number, since it uses less digits than its factorization.

121211573329 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82851420.

The product of its digits is 22680, while the sum is 37.

The spelling of 121211573329 in words is "one hundred twenty-one billion, two hundred eleven million, five hundred seventy-three thousand, three hundred twenty-nine".