202226381 has 6 divisors (see below), whose sum is σ = 235242990. Its totient is φ = 173336856.

The previous prime is 202226363. The next prime is 202226417. The reversal of 202226381 is 183622202.

It can be written as a sum of positive squares in only one way, i.e., 101324356 + 100902025 = 10066^2 + 10045^2 .

It is not a de Polignac number, because 202226381 - 2⁶ = 202226317 is a prime.

It is a super-2 number, since 2×202226381² = 81791018344714322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 202226381.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202226351) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2063486 + ... + 2063583.

It is an arithmetic number, because the mean of its divisors is an integer number (39207165).

Almost surely, 2^202226381 is an apocalyptic number.

It is an amenable number.

202226381 is a deficient number, since it is larger than the sum of its proper divisors (33016609).

202226381 is an equidigital number, since it uses as much as digits as its factorization.

202226381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4127083 (or 4127076 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 202226381 is about 14220.6322292646. The cubic root of 202226381 is about 586.9655375349.

Adding to 202226381 its reverse (183622202), we get a palindrome (385848583).

The spelling of 202226381 in words is "two hundred two million, two hundred twenty-six thousand, three hundred eighty-one".