121005127 has 2 divisors, whose sum is σ = 121005128. Its totient is φ = 121005126.

The previous prime is 121005097. The next prime is 121005161. The reversal of 121005127 is 721500121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121005127 - 2⁷ = 121004999 is a prime.

It is a super-2 number, since 2×121005127² = 29284481520572258, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121005187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60502563 + 60502564.

It is an arithmetic number, because the mean of its divisors is an integer number (60502564).

Almost surely, 2^121005127 is an apocalyptic number.

121005127 is a deficient number, since it is larger than the sum of its proper divisors (1).

121005127 is an equidigital number, since it uses as much as digits as its factorization.

121005127 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 140, while the sum is 19.

The square root of 121005127 is about 11000.2330429860. The cubic root of 121005127 is about 494.6157300638.

Adding to 121005127 its reverse (721500121), we get a palindrome (842505248).

The spelling of 121005127 in words is "one hundred twenty-one million, five thousand, one hundred twenty-seven".