121000897 has 2 divisors, whose sum is σ = 121000898. Its totient is φ = 121000896.

The previous prime is 121000879. The next prime is 121000921. The reversal of 121000897 is 798000121.

Together with previous prime (121000879) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 104223681 + 16777216 = 10209^2 + 4096^2 .

It is an emirp because it is prime and its reverse (798000121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 121000897 - 2¹⁵ = 120968129 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (121000837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60500448 + 60500449.

It is an arithmetic number, because the mean of its divisors is an integer number (60500449).

Almost surely, 2^121000897 is an apocalyptic number.

It is an amenable number.

121000897 is a deficient number, since it is larger than the sum of its proper divisors (1).

121000897 is an equidigital number, since it uses as much as digits as its factorization.

121000897 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1008, while the sum is 28.

The square root of 121000897 is about 11000.0407726517. The cubic root of 121000897 is about 494.6099665368.

The spelling of 121000897 in words is "one hundred twenty-one million, eight hundred ninety-seven", and thus it is an aban number.