354266221 has 4 divisors (see below), whose sum is σ = 354304000. Its totient is φ = 354228444.

The previous prime is 354266219. The next prime is 354266251. The reversal of 354266221 is 122662453.

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 a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 122662453 = 8741 ⋅14033.

It is a cyclic number.

It is not a de Polignac number, because 354266221 - 2¹ = 354266219 is a prime.

It is a super-3 number, since 3×354266221³ (a number of 27 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (354266251) 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, 7060 + ... + 27538.

It is an arithmetic number, because the mean of its divisors is an integer number (88576000).

Almost surely, 2^354266221 is an apocalyptic number.

It is an amenable number.

354266221 is a deficient number, since it is larger than the sum of its proper divisors (37779).

354266221 is a wasteful number, since it uses less digits than its factorization.

354266221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37778.

The product of its digits is 17280, while the sum is 31.

The square root of 354266221 is about 18821.9611358647. The cubic root of 354266221 is about 707.5816824370.

The spelling of 354266221 in words is "three hundred fifty-four million, two hundred sixty-six thousand, two hundred twenty-one".