202117073 has 4 divisors (see below), whose sum is σ = 202160640. Its totient is φ = 202073508.

The previous prime is 202117043. The next prime is 202117081. The reversal of 202117073 is 370711202.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 370711202 = 2 ⋅185355601.

It is a cyclic number.

It is not a de Polignac number, because 202117073 - 2¹⁶ = 202051537 is a prime.

It is a super-2 number, since 2×202117073² = 81702622396174658, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (202117033) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13865 + ... + 24422.

It is an arithmetic number, because the mean of its divisors is an integer number (50540160).

Almost surely, 2^202117073 is an apocalyptic number.

It is an amenable number.

202117073 is a deficient number, since it is larger than the sum of its proper divisors (43567).

202117073 is an equidigital number, since it uses as much as digits as its factorization.

202117073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43566.

The product of its (nonzero) digits is 588, while the sum is 23.

The square root of 202117073 is about 14216.7884207369. The cubic root of 202117073 is about 586.8597623600.

Adding to 202117073 its reverse (370711202), we get a palindrome (572828275).

The spelling of 202117073 in words is "two hundred two million, one hundred seventeen thousand, seventy-three".