354022021 has 4 divisors (see below), whose sum is σ = 357459232. Its totient is φ = 350584812.

The previous prime is 354022013. The next prime is 354022027. The reversal of 354022021 is 120220453.

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 354022021 - 2³ = 354022013 is a prime.

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 354022021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (354022027) 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, 1718451 + ... + 1718656.

It is an arithmetic number, because the mean of its divisors is an integer number (89364808).

Almost surely, 2^354022021 is an apocalyptic number.

It is an amenable number.

354022021 is a deficient number, since it is larger than the sum of its proper divisors (3437211).

354022021 is a wasteful number, since it uses less digits than its factorization.

354022021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3437210.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 354022021 is about 18815.4729145988. The cubic root of 354022021 is about 707.4190635229.

Adding to 354022021 its reverse (120220453), we get a palindrome (474242474).

The spelling of 354022021 in words is "three hundred fifty-four million, twenty-two thousand, twenty-one".