121001112101 has 2 divisors, whose sum is σ = 121001112102. Its totient is φ = 121001112100.

The previous prime is 121001112083. The next prime is 121001112139. The reversal of 121001112101 is 101211100121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 107171116900 + 13829995201 = 327370^2 + 117601^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121001112101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121001112151) 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, 60500556050 + 60500556051.

It is an arithmetic number, because the mean of its divisors is an integer number (60500556051).

Almost surely, 2^121001112101 is an apocalyptic number.

It is an amenable number.

121001112101 is a deficient number, since it is larger than the sum of its proper divisors (1).

121001112101 is an equidigital number, since it uses as much as digits as its factorization.

121001112101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 121001112101 its reverse (101211100121), we get a palindrome (222212212222).

The spelling of 121001112101 in words is "one hundred twenty-one billion, one million, one hundred twelve thousand, one hundred one".