354233213402421 has 16 divisors (see below), whose sum is σ = 487558704427520. Its totient is φ = 228531971367360.

The previous prime is 354233213402339. The next prime is 354233213402617. The reversal of 354233213402421 is 124204312332453.

It is not a de Polignac number, because 354233213402421 - 2¹⁴ = 354233213386037 is a prime.

It is a super-3 number, since 3×354233213402421³ (a number of 45 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

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 354233213402421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (354233213402021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42719986 + ... + 50333523.

It is an arithmetic number, because the mean of its divisors is an integer number (30472419026720).

Almost surely, 2^{354233213402421} is an apocalyptic number.

354233213402421 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

354233213402421 is a deficient number, since it is larger than the sum of its proper divisors (133325491025099).

354233213402421 is a wasteful number, since it uses less digits than its factorization.

354233213402421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93094476.

The product of its (nonzero) digits is 414720, while the sum is 39.

Adding to 354233213402421 its reverse (124204312332453), we get a palindrome (478437525734874).

The spelling of 354233213402421 in words is "three hundred fifty-four trillion, two hundred thirty-three billion, two hundred thirteen million, four hundred two thousand, four hundred twenty-one".