101020993 has 4 divisors (see below), whose sum is σ = 101117268. Its totient is φ = 100924720.

The previous prime is 101020981. The next prime is 101021003. The reversal of 101020993 is 399020101.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 42146064 + 58874929 = 6492^2 + 7673^2 .

It is a cyclic number.

It is not a de Polignac number, because 101020993 - 2²¹ = 98923841 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (101020943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46546 + ... + 48667.

It is an arithmetic number, because the mean of its divisors is an integer number (25279317).

Almost surely, 2^101020993 is an apocalyptic number.

It is an amenable number.

101020993 is a deficient number, since it is larger than the sum of its proper divisors (96275).

101020993 is an equidigital number, since it uses as much as digits as its factorization.

101020993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96274.

The product of its (nonzero) digits is 486, while the sum is 25.

The square root of 101020993 is about 10050.9200076411. The cubic root of 101020993 is about 465.7332140899.

The spelling of 101020993 in words is "one hundred one million, twenty thousand, nine hundred ninety-three".