121211243433053 has 2 divisors, whose sum is σ = 121211243433054. Its totient is φ = 121211243433052.

The previous prime is 121211243433031. The next prime is 121211243433079. The reversal of 121211243433053 is 350334342112121.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 119776870724644 + 1434372708409 = 10944262^2 + 1197653^2 .

It is an emirp because it is prime and its reverse (350334342112121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 121211243433053 - 2²⁸ = 121210974997597 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121211243433853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60605621716526 + 60605621716527.

It is an arithmetic number, because the mean of its divisors is an integer number (60605621716527).

Almost surely, 2^{121211243433053} is an apocalyptic number.

It is an amenable number.

121211243433053 is a deficient number, since it is larger than the sum of its proper divisors (1).

121211243433053 is an equidigital number, since it uses as much as digits as its factorization.

121211243433053 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 51840, while the sum is 35.

Adding to 121211243433053 its reverse (350334342112121), we get a palindrome (471545585545174).

The spelling of 121211243433053 in words is "one hundred twenty-one trillion, two hundred eleven billion, two hundred forty-three million, four hundred thirty-three thousand, fifty-three".