21476522221446 has 64 divisors (see below), whose sum is σ = 44516778001920. Its totient is φ = 6899142781440.

The previous prime is 21476522221439. The next prime is 21476522221501. The reversal of 21476522221446 is 64412222567412.

It is a super-2 number, since 2×21476522221446² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21476522221395 and 21476522221404.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 392790366 + ... + 392845038.

It is an arithmetic number, because the mean of its divisors is an integer number (695574656280).

Almost surely, 2^{21476522221446} is an apocalyptic number.

21476522221446 is an abundant number, since it is smaller than the sum of its proper divisors (23040255780474).

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

21476522221446 is a wasteful number, since it uses less digits than its factorization.

21476522221446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58861.

The product of its digits is 2580480, while the sum is 48.

Adding to 21476522221446 its reverse (64412222567412), we get a palindrome (85888744788858).

The spelling of 21476522221446 in words is "twenty-one trillion, four hundred seventy-six billion, five hundred twenty-two million, two hundred twenty-one thousand, four hundred forty-six".