121966051 has 2 divisors, whose sum is σ = 121966052. Its totient is φ = 121966050.

The previous prime is 121966037. The next prime is 121966057. The reversal of 121966051 is 150669121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121966051 - 2⁹ = 121965539 is a prime.

It is not a weakly prime, because it can be changed into another prime (121966057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60983025 + 60983026.

It is an arithmetic number, because the mean of its divisors is an integer number (60983026).

Almost surely, 2^121966051 is an apocalyptic number.

121966051 is a deficient number, since it is larger than the sum of its proper divisors (1).

121966051 is an equidigital number, since it uses as much as digits as its factorization.

121966051 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3240, while the sum is 31.

The square root of 121966051 is about 11043.8241112397. The cubic root of 121966051 is about 495.9215577368.

The spelling of 121966051 in words is "one hundred twenty-one million, nine hundred sixty-six thousand, fifty-one".