354121311522 has 64 divisors (see below), whose sum is σ = 789242342400. Its totient is φ = 105019675200.

The previous prime is 354121311413. The next prime is 354121311527. The reversal of 354121311522 is 225113121453.

It is a happy number.

It is a super-2 number, since 2×354121311522² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 354121311522.

It is not an unprimeable number, because it can be changed into a prime (354121311527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 580173 + ... + 1022175.

It is an arithmetic number, because the mean of its divisors is an integer number (12331911600).

Almost surely, 2^354121311522 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 354121311522, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (394621171200).

354121311522 is an abundant number, since it is smaller than the sum of its proper divisors (435121030878).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

354121311522 is a wasteful number, since it uses less digits than its factorization.

354121311522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 442279.

The product of its digits is 7200, while the sum is 30.

Adding to 354121311522 its reverse (225113121453), we get a palindrome (579234432975).

The spelling of 354121311522 in words is "three hundred fifty-four billion, one hundred twenty-one million, three hundred eleven thousand, five hundred twenty-two".