226121724040 has 64 divisors (see below), whose sum is σ = 509753910960. Its totient is φ = 90274652160.

The previous prime is 226121723963. The next prime is 226121724047. The reversal of 226121724040 is 40427121622.

It can be written as a sum of positive squares in 8 ways, for example, as 77238414724 + 148883309316 = 277918^2 + 385854^2 .

It is a super-2 number, since 2×226121724040² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 226121723993 and 226121724011.

It is not an unprimeable number, because it can be changed into a prime (226121724047) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 85878564 + ... + 85881196.

Almost surely, 2^226121724040 is an apocalyptic number.

226121724040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

226121724040 is an abundant number, since it is smaller than the sum of its proper divisors (283632186920).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

226121724040 is a wasteful number, since it uses less digits than its factorization.

226121724040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5962 (or 5958 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 31.

Adding to 226121724040 its reverse (40427121622), we get a palindrome (266548845662).

The spelling of 226121724040 in words is "two hundred twenty-six billion, one hundred twenty-one million, seven hundred twenty-four thousand, forty".