10121220133 has 2 divisors, whose sum is σ = 10121220134. Its totient is φ = 10121220132.

The previous prime is 10121220097. The next prime is 10121220149. The reversal of 10121220133 is 33102212101.

It is an a-pointer prime, because the next prime (10121220149) can be obtained adding 10121220133 to its sum of digits (16).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10099848004 + 21372129 = 100498^2 + 4623^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10121220133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10121220233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5060610066 + 5060610067.

It is an arithmetic number, because the mean of its divisors is an integer number (5060610067).

Almost surely, 2^10121220133 is an apocalyptic number.

It is an amenable number.

10121220133 is a deficient number, since it is larger than the sum of its proper divisors (1).

10121220133 is an equidigital number, since it uses as much as digits as its factorization.

10121220133 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 10121220133 its reverse (33102212101), we get a palindrome (43223432234).

The spelling of 10121220133 in words is "ten billion, one hundred twenty-one million, two hundred twenty thousand, one hundred thirty-three".