121223887 has 2 divisors, whose sum is σ = 121223888. Its totient is φ = 121223886.

The previous prime is 121223833. The next prime is 121223911. The reversal of 121223887 is 788322121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121223887 - 2⁷ = 121223759 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121223807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60611943 + 60611944.

It is an arithmetic number, because the mean of its divisors is an integer number (60611944).

Almost surely, 2^121223887 is an apocalyptic number.

121223887 is a deficient number, since it is larger than the sum of its proper divisors (1).

121223887 is an equidigital number, since it uses as much as digits as its factorization.

121223887 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10752, while the sum is 34.

The square root of 121223887 is about 11010.1719786750. The cubic root of 121223887 is about 494.9136155075.

The spelling of 121223887 in words is "one hundred twenty-one million, two hundred twenty-three thousand, eight hundred eighty-seven".