101021449 has 2 divisors, whose sum is σ = 101021450. Its totient is φ = 101021448.

The previous prime is 101021443. The next prime is 101021477. The reversal of 101021449 is 944120101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 80227849 + 20793600 = 8957^2 + 4560^2 .

It is a cyclic number.

It is not a de Polignac number, because 101021449 - 2⁷ = 101021321 is a prime.

It is not a weakly prime, because it can be changed into another prime (101021443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50510724 + 50510725.

It is an arithmetic number, because the mean of its divisors is an integer number (50510725).

Almost surely, 2^101021449 is an apocalyptic number.

It is an amenable number.

101021449 is a deficient number, since it is larger than the sum of its proper divisors (1).

101021449 is an equidigital number, since it uses as much as digits as its factorization.

101021449 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 101021449 is about 10050.9426921060. The cubic root of 101021449 is about 465.7339148486.

The spelling of 101021449 in words is "one hundred one million, twenty-one thousand, four hundred forty-nine".