10121011998533 has 2 divisors, whose sum is σ = 10121011998534. Its totient is φ = 10121011998532.

The previous prime is 10121011998511. The next prime is 10121011998553. The reversal of 10121011998533 is 33589911012101.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9516003379204 + 605008619329 = 3084802^2 + 777823^2 .

It is a cyclic number.

It is not a de Polignac number, because 10121011998533 - 2³⁰ = 10119938256709 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10121011998553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5060505999266 + 5060505999267.

It is an arithmetic number, because the mean of its divisors is an integer number (5060505999267).

Almost surely, 2^{10121011998533} is an apocalyptic number.

It is an amenable number.

10121011998533 is a deficient number, since it is larger than the sum of its proper divisors (1).

10121011998533 is an equidigital number, since it uses as much as digits as its factorization.

10121011998533 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 58320, while the sum is 44.

The spelling of 10121011998533 in words is "ten trillion, one hundred twenty-one billion, eleven million, nine hundred ninety-eight thousand, five hundred thirty-three".