121012000073 has 2 divisors, whose sum is σ = 121012000074. Its totient is φ = 121012000072.

The previous prime is 121012000003. The next prime is 121012000169. The reversal of 121012000073 is 370000210121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 118850494009 + 2161506064 = 344747^2 + 46492^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121012000073 is a prime.

It is not a weakly prime, because it can be changed into another prime (121012000003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60506000036 + 60506000037.

It is an arithmetic number, because the mean of its divisors is an integer number (60506000037).

Almost surely, 2^121012000073 is an apocalyptic number.

It is an amenable number.

121012000073 is a deficient number, since it is larger than the sum of its proper divisors (1).

121012000073 is an equidigital number, since it uses as much as digits as its factorization.

121012000073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 84, while the sum is 17.

Adding to 121012000073 its reverse (370000210121), we get a palindrome (491012210194).

The spelling of 121012000073 in words is "one hundred twenty-one billion, twelve million, seventy-three", and thus it is an aban number.