101012089 has 2 divisors, whose sum is σ = 101012090. Its totient is φ = 101012088.

The previous prime is 101012083. The next prime is 101012137. The reversal of 101012089 is 980210101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 99301225 + 1710864 = 9965^2 + 1308^2 .

It is a cyclic number.

It is not a de Polignac number, because 101012089 - 2⁵ = 101012057 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (101012083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50506044 + 50506045.

It is an arithmetic number, because the mean of its divisors is an integer number (50506045).

Almost surely, 2^101012089 is an apocalyptic number.

It is an amenable number.

101012089 is a deficient number, since it is larger than the sum of its proper divisors (1).

101012089 is an equidigital number, since it uses as much as digits as its factorization.

101012089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 22.

The square root of 101012089 is about 10050.4770533542. The cubic root of 101012089 is about 465.7195304312.

The spelling of 101012089 in words is "one hundred one million, twelve thousand, eighty-nine".