121969963 has 2 divisors, whose sum is σ = 121969964. Its totient is φ = 121969962.

The previous prime is 121969901. The next prime is 121969999. The reversal of 121969963 is 369969121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121969963 - 2²¹ = 119872811 is a prime.

It is not a weakly prime, because it can be changed into another prime (121969663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60984981 + 60984982.

It is an arithmetic number, because the mean of its divisors is an integer number (60984982).

Almost surely, 2^121969963 is an apocalyptic number.

121969963 is a deficient number, since it is larger than the sum of its proper divisors (1).

121969963 is an equidigital number, since it uses as much as digits as its factorization.

121969963 is an evil number, because the sum of its binary digits is even.

The product of its digits is 157464, while the sum is 46.

The square root of 121969963 is about 11044.0012223831. The cubic root of 121969963 is about 495.9268598253.

The spelling of 121969963 in words is "one hundred twenty-one million, nine hundred sixty-nine thousand, nine hundred sixty-three".