121968503 has 2 divisors, whose sum is σ = 121968504. Its totient is φ = 121968502.

The previous prime is 121968491. The next prime is 121968527. The reversal of 121968503 is 305869121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121968503 - 2⁶ = 121968439 is a prime.

It is a super-2 number, since 2×121968503² = 29752631448122018, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121968533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60984251 + 60984252.

It is an arithmetic number, because the mean of its divisors is an integer number (60984252).

Almost surely, 2^121968503 is an apocalyptic number.

121968503 is a deficient number, since it is larger than the sum of its proper divisors (1).

121968503 is an equidigital number, since it uses as much as digits as its factorization.

121968503 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12960, while the sum is 35.

The square root of 121968503 is about 11043.9351229532. The cubic root of 121968503 is about 495.9248810428.

The spelling of 121968503 in words is "one hundred twenty-one million, nine hundred sixty-eight thousand, five hundred three".