121024400429 has 2 divisors, whose sum is σ = 121024400430. Its totient is φ = 121024400428.

The previous prime is 121024400401. The next prime is 121024400501. The reversal of 121024400429 is 924004420121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 120338222404 + 686178025 = 346898^2 + 26195^2 .

It is an emirp because it is prime and its reverse (924004420121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 121024400429 - 2²⁴ = 121007623213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121024400929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60512200214 + 60512200215.

It is an arithmetic number, because the mean of its divisors is an integer number (60512200215).

Almost surely, 2^121024400429 is an apocalyptic number.

It is an amenable number.

121024400429 is a deficient number, since it is larger than the sum of its proper divisors (1).

121024400429 is an equidigital number, since it uses as much as digits as its factorization.

121024400429 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4608, while the sum is 29.

The spelling of 121024400429 in words is "one hundred twenty-one billion, twenty-four million, four hundred thousand, four hundred twenty-nine".