226021129 has 4 divisors (see below), whose sum is σ = 228133584. Its totient is φ = 223908676.

The previous prime is 226021121. The next prime is 226021139. The reversal of 226021129 is 921120622.

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.

It is a cyclic number.

It is not a de Polignac number, because 226021129 - 2³ = 226021121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (226021121) 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, 1056067 + ... + 1056280.

It is an arithmetic number, because the mean of its divisors is an integer number (57033396).

Almost surely, 2^226021129 is an apocalyptic number.

It is an amenable number.

226021129 is a deficient number, since it is larger than the sum of its proper divisors (2112455).

226021129 is a wasteful number, since it uses less digits than its factorization.

226021129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2112454.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 226021129 is about 15033.9991020354. Note that the first 3 decimals coincide. The cubic root of 226021129 is about 609.1389167416.

The spelling of 226021129 in words is "two hundred twenty-six million, twenty-one thousand, one hundred twenty-nine".