226252421 has 2 divisors, whose sum is σ = 226252422. Its totient is φ = 226252420.

The previous prime is 226252379. The next prime is 226252427. The reversal of 226252421 is 124252622.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 120450625 + 105801796 = 10975^2 + 10286^2 .

It is a cyclic number.

It is not a de Polignac number, because 226252421 - 2¹⁰ = 226251397 is a prime.

It is a super-2 number, since 2×226252421² = 102380316016722482, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (226252427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 113126210 + 113126211.

It is an arithmetic number, because the mean of its divisors is an integer number (113126211).

Almost surely, 2^226252421 is an apocalyptic number.

It is an amenable number.

226252421 is a deficient number, since it is larger than the sum of its proper divisors (1).

226252421 is an equidigital number, since it uses as much as digits as its factorization.

226252421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3840, while the sum is 26.

The square root of 226252421 is about 15041.6894330391. The cubic root of 226252421 is about 609.3466273040.

The spelling of 226252421 in words is "two hundred twenty-six million, two hundred fifty-two thousand, four hundred twenty-one".