121031222233021 has 2 divisors, whose sum is σ = 121031222233022. Its totient is φ = 121031222233020.

The previous prime is 121031222232913. The next prime is 121031222233037. The reversal of 121031222233021 is 120332222130121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 103827723988921 + 17203498244100 = 10189589^2 + 4147710^2 .

It is a cyclic number.

It is not a de Polignac number, because 121031222233021 - 2¹¹ = 121031222230973 is a prime.

It is a super-3 number, since 3×121031222233021³ (a number of 43 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121031222233081) 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, 60515611116510 + 60515611116511.

It is an arithmetic number, because the mean of its divisors is an integer number (60515611116511).

Almost surely, 2^{121031222233021} is an apocalyptic number.

It is an amenable number.

121031222233021 is a deficient number, since it is larger than the sum of its proper divisors (1).

121031222233021 is an equidigital number, since it uses as much as digits as its factorization.

121031222233021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 121031222233021 its reverse (120332222130121), we get a palindrome (241363444363142).

The spelling of 121031222233021 in words is "one hundred twenty-one trillion, thirty-one billion, two hundred twenty-two million, two hundred thirty-three thousand, twenty-one".