121154071 has 2 divisors, whose sum is σ = 121154072. Its totient is φ = 121154070.

The previous prime is 121153999. The next prime is 121154101. The reversal of 121154071 is 170451121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121154071 - 2⁷ = 121153943 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121154771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60577035 + 60577036.

It is an arithmetic number, because the mean of its divisors is an integer number (60577036).

Almost surely, 2^121154071 is an apocalyptic number.

121154071 is a deficient number, since it is larger than the sum of its proper divisors (1).

121154071 is an equidigital number, since it uses as much as digits as its factorization.

121154071 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 280, while the sum is 22.

The square root of 121154071 is about 11007.0009993640. Note that the first 3 decimals coincide. The cubic root of 121154071 is about 494.8185860397.

Subtracting from 121154071 its sum of digits (22), we obtain a square (121154049 = 11007²).

The spelling of 121154071 in words is "one hundred twenty-one million, one hundred fifty-four thousand, seventy-one".