121963507 has 4 divisors (see below), whose sum is σ = 125259856. Its totient is φ = 118667160.

The previous prime is 121963493. The next prime is 121963519. The reversal of 121963507 is 705369121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 705369121 = 1013 ⋅696317.

It is a cyclic number.

It is not a de Polignac number, because 121963507 - 2⁷ = 121963379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121963537) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1648119 + ... + 1648192.

It is an arithmetic number, because the mean of its divisors is an integer number (31314964).

Almost surely, 2^121963507 is an apocalyptic number.

121963507 is a deficient number, since it is larger than the sum of its proper divisors (3296349).

121963507 is an equidigital number, since it uses as much as digits as its factorization.

121963507 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3296348.

The product of its (nonzero) digits is 11340, while the sum is 34.

The square root of 121963507 is about 11043.7089331438. The cubic root of 121963507 is about 495.9181096920.

The spelling of 121963507 in words is "one hundred twenty-one million, nine hundred sixty-three thousand, five hundred seven".