354424421212021 has 16 divisors (see below), whose sum is σ = 375763732344000. Its totient is φ = 333139917154048.

The previous prime is 354424421212013. The next prime is 354424421212061. The reversal of 354424421212021 is 120212124424453.

It is not a de Polignac number, because 354424421212021 - 2³ = 354424421212013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (354424421212061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37466226 + ... + 45962668.

It is an arithmetic number, because the mean of its divisors is an integer number (23485233271500).

Almost surely, 2^{354424421212021} is an apocalyptic number.

It is an amenable number.

354424421212021 is a deficient number, since it is larger than the sum of its proper divisors (21339311131979).

354424421212021 is a wasteful number, since it uses less digits than its factorization.

354424421212021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8499668.

The product of its (nonzero) digits is 122880, while the sum is 37.

Adding to 354424421212021 its reverse (120212124424453), we get a palindrome (474636545636474).

The spelling of 354424421212021 in words is "three hundred fifty-four trillion, four hundred twenty-four billion, four hundred twenty-one million, two hundred twelve thousand, twenty-one".