121311232200101 has 2 divisors, whose sum is σ = 121311232200102. Its totient is φ = 121311232200100.

The previous prime is 121311232200089. The next prime is 121311232200121. The reversal of 121311232200101 is 101002232113121.

It is an a-pointer prime, because the next prime (121311232200121) can be obtained adding 121311232200101 to its sum of digits (20).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 116545000951201 + 4766231248900 = 10795601^2 + 2183170^2 .

It is an emirp because it is prime and its reverse (101002232113121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 121311232200101 - 2¹⁸ = 121311231937957 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121311232200121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60655616100050 + 60655616100051.

It is an arithmetic number, because the mean of its divisors is an integer number (60655616100051).

Almost surely, 2^{121311232200101} is an apocalyptic number.

It is an amenable number.

121311232200101 is a deficient number, since it is larger than the sum of its proper divisors (1).

121311232200101 is an equidigital number, since it uses as much as digits as its factorization.

121311232200101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 121311232200101 its reverse (101002232113121), we get a palindrome (222313464313222).

The spelling of 121311232200101 in words is "one hundred twenty-one trillion, three hundred eleven billion, two hundred thirty-two million, two hundred thousand, one hundred one".