100121039 has 2 divisors, whose sum is σ = 100121040. Its totient is φ = 100121038.

The previous prime is 100121029. The next prime is 100121111. The reversal of 100121039 is 930121001.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 100121039 - 2⁴ = 100121023 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100121029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50060519 + 50060520.

It is an arithmetic number, because the mean of its divisors is an integer number (50060520).

Almost surely, 2^100121039 is an apocalyptic number.

100121039 is a deficient number, since it is larger than the sum of its proper divisors (1).

100121039 is an equidigital number, since it uses as much as digits as its factorization.

100121039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54, while the sum is 17.

The square root of 100121039 is about 10006.0501198025. The cubic root of 100121039 is about 464.3460789453.

The spelling of 100121039 in words is "one hundred million, one hundred twenty-one thousand, thirty-nine".