121712001101 has 2 divisors, whose sum is σ = 121712001102. Its totient is φ = 121712001100.

The previous prime is 121712001097. The next prime is 121712001133. The reversal of 121712001101 is 101100217121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 103506975625 + 18205025476 = 321725^2 + 134926^2 .

It is a cyclic number.

It is not a de Polignac number, because 121712001101 - 2² = 121712001097 is a prime.

It is a super-2 number, since 2×121712001101² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 121712001101.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121712007101) 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, 60856000550 + 60856000551.

It is an arithmetic number, because the mean of its divisors is an integer number (60856000551).

Almost surely, 2^121712001101 is an apocalyptic number.

It is an amenable number.

121712001101 is a deficient number, since it is larger than the sum of its proper divisors (1).

121712001101 is an equidigital number, since it uses as much as digits as its factorization.

121712001101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 28, while the sum is 17.

Adding to 121712001101 its reverse (101100217121), we get a palindrome (222812218222).

The spelling of 121712001101 in words is "one hundred twenty-one billion, seven hundred twelve million, one thousand, one hundred one".