20101071 has 8 divisors (see below), whose sum is σ = 26822320. Its totient is φ = 13390272.

The previous prime is 20101013. The next prime is 20101073. The reversal of 20101071 is 17010102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20101071 - 2⁷ = 20100943 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20101073) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5331 + ... + 8283.

It is an arithmetic number, because the mean of its divisors is an integer number (3352790).

Almost surely, 2^20101071 is an apocalyptic number.

20101071 is a deficient number, since it is larger than the sum of its proper divisors (6721249).

20101071 is a wasteful number, since it uses less digits than its factorization.

20101071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5225.

The product of its (nonzero) digits is 14, while the sum is 12.

The square root of 20101071 is about 4483.4217959054. The cubic root of 20101071 is about 271.8982417441.

Adding to 20101071 its reverse (17010102), we get a palindrome (37111173).

It can be divided in two parts, 2010 and 1071, that added together give a triangular number (3081 = T₇₈).

The spelling of 20101071 in words is "twenty million, one hundred one thousand, seventy-one".