21454452234522 has 12 divisors (see below), whose sum is σ = 46484646508170. Its totient is φ = 7151484078168.

The previous prime is 21454452234511. The next prime is 21454452234557. The reversal of 21454452234522 is 22543225445412.

21454452234522 is a `hidden beast` number, since 2 + 1 + 4 + 5 + 44 + 52 + 2 + 34 + 522 = 666.

It can be written as a sum of positive squares in only one way, i.e., 13816022094081 + 7638430140441 = 3716991^2 + 2763771^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 595957006497 + ... + 595957006532.

Almost surely, 2^{21454452234522} is an apocalyptic number.

21454452234522 is an abundant number, since it is smaller than the sum of its proper divisors (25030194273648).

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

21454452234522 is a wasteful number, since it uses less digits than its factorization.

21454452234522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1191914013037 (or 1191914013034 counting only the distinct ones).

The product of its digits is 3072000, while the sum is 45.

Adding to 21454452234522 its reverse (22543225445412), we get a palindrome (43997677679934).

The spelling of 21454452234522 in words is "twenty-one trillion, four hundred fifty-four billion, four hundred fifty-two million, two hundred thirty-four thousand, five hundred twenty-two".