354225113052021 has 24 divisors (see below), whose sum is σ = 535588759704960. Its totient is φ = 225170117083296.

The previous prime is 354225113052007. The next prime is 354225113052043. The reversal of 354225113052021 is 120250311522453.

354225113052021 is a `hidden beast` number, since 3 + 5 + 42 + 2 + 511 + 30 + 52 + 0 + 21 = 666.

It is not a de Polignac number, because 354225113052021 - 2¹³ = 354225113043829 is a prime.

It is a super-3 number, since 3×354225113052021³ (a number of 45 digits) contains 333 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (354225113052121) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2699039161 + ... + 2699170398.

It is an arithmetic number, because the mean of its divisors is an integer number (22316198321040).

Almost surely, 2^{354225113052021} is an apocalyptic number.

It is an amenable number.

354225113052021 is a deficient number, since it is larger than the sum of its proper divisors (181363646652939).

354225113052021 is a wasteful number, since it uses less digits than its factorization.

354225113052021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5398209905 (or 5398209902 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 36.

Adding to 354225113052021 its reverse (120250311522453), we get a palindrome (474475424574474).

The spelling of 354225113052021 in words is "three hundred fifty-four trillion, two hundred twenty-five billion, one hundred thirteen million, fifty-two thousand, twenty-one".