121012110101 has 2 divisors, whose sum is σ = 121012110102. Its totient is φ = 121012110100.

The previous prime is 121012110097. The next prime is 121012110143. The reversal of 121012110101 is 101011210121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 101690832100 + 19321278001 = 318890^2 + 139001^2 .

It is an emirp because it is prime and its reverse (101011210121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 121012110101 - 2² = 121012110097 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121012110161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60506055050 + 60506055051.

It is an arithmetic number, because the mean of its divisors is an integer number (60506055051).

Almost surely, 2^121012110101 is an apocalyptic number.

It is an amenable number.

121012110101 is a deficient number, since it is larger than the sum of its proper divisors (1).

121012110101 is an equidigital number, since it uses as much as digits as its factorization.

121012110101 is an evil number, because the sum of its binary digits is even.

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

Adding to 121012110101 its reverse (101011210121), we get a palindrome (222023320222).

It can be divided in two parts, 1210121 and 10101, that multiplied together give a palindrome (12223432221).

The spelling of 121012110101 in words is "one hundred twenty-one billion, twelve million, one hundred ten thousand, one hundred one".