121755370229 has 2 divisors, whose sum is σ = 121755370230. Its totient is φ = 121755370228.

The previous prime is 121755370223. The next prime is 121755370283. The reversal of 121755370229 is 922073557121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 121389528100 + 365842129 = 348410^2 + 19127^2 .

It is a cyclic number.

It is not a de Polignac number, because 121755370229 - 2⁴ = 121755370213 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 121755370229.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121755370223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60877685114 + 60877685115.

It is an arithmetic number, because the mean of its divisors is an integer number (60877685115).

Almost surely, 2^121755370229 is an apocalyptic number.

It is an amenable number.

121755370229 is a deficient number, since it is larger than the sum of its proper divisors (1).

121755370229 is an equidigital number, since it uses as much as digits as its factorization.

121755370229 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 264600, while the sum is 44.

The spelling of 121755370229 in words is "one hundred twenty-one billion, seven hundred fifty-five million, three hundred seventy thousand, two hundred twenty-nine".