121000032001 has 2 divisors, whose sum is σ = 121000032002. Its totient is φ = 121000032000.

The previous prime is 121000031989. The next prime is 121000032029. The reversal of 121000032001 is 100230000121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 77952081601 + 43047950400 = 279199^2 + 207480^2 .

It is an emirp because it is prime and its reverse (100230000121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 121000032001 - 2⁹ = 121000031489 is a prime.

It is not a weakly prime, because it can be changed into another prime (121000032061) 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 as a sum of consecutive naturals, namely, 60500016000 + 60500016001.

It is an arithmetic number, because the mean of its divisors is an integer number (60500016001).

Almost surely, 2^121000032001 is an apocalyptic number.

It is an amenable number.

121000032001 is a deficient number, since it is larger than the sum of its proper divisors (1).

121000032001 is an equidigital number, since it uses as much as digits as its factorization.

121000032001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12, while the sum is 10.

Adding to 121000032001 its reverse (100230000121), we get a palindrome (221230032122).

The spelling of 121000032001 in words is "one hundred twenty-one billion, thirty-two thousand, one".