121502253503 has 2 divisors, whose sum is σ = 121502253504. Its totient is φ = 121502253502.

The previous prime is 121502253449. The next prime is 121502253517. The reversal of 121502253503 is 305352205121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121502253503 - 2¹⁰ = 121502252479 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121502253563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60751126751 + 60751126752.

It is an arithmetic number, because the mean of its divisors is an integer number (60751126752).

Almost surely, 2^121502253503 is an apocalyptic number.

121502253503 is a deficient number, since it is larger than the sum of its proper divisors (1).

121502253503 is an equidigital number, since it uses as much as digits as its factorization.

121502253503 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9000, while the sum is 29.

Adding to 121502253503 its reverse (305352205121), we get a palindrome (426854458624).

The spelling of 121502253503 in words is "one hundred twenty-one billion, five hundred two million, two hundred fifty-three thousand, five hundred three".