112001129921 has 2 divisors, whose sum is σ = 112001129922. Its totient is φ = 112001129920.

The previous prime is 112001129899. The next prime is 112001130013. The reversal of 112001129921 is 129921100211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 108725170225 + 3275959696 = 329735^2 + 57236^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-112001129921 is a prime.

It is not a weakly prime, because it can be changed into another prime (112001120921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56000564960 + 56000564961.

It is an arithmetic number, because the mean of its divisors is an integer number (56000564961).

Almost surely, 2^112001129921 is an apocalyptic number.

It is an amenable number.

112001129921 is a deficient number, since it is larger than the sum of its proper divisors (1).

112001129921 is an equidigital number, since it uses as much as digits as its factorization.

112001129921 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 29.

The spelling of 112001129921 in words is "one hundred twelve billion, one million, one hundred twenty-nine thousand, nine hundred twenty-one".