21454452221104 has 120 divisors (see below), whose sum is σ = 50531890894848. Its totient is φ = 8789849147520.

The previous prime is 21454452221087. The next prime is 21454452221113. The reversal of 21454452221104 is 40112225445412.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5185792 + ... + 8354719.

Almost surely, 2^{21454452221104} is an apocalyptic number.

It is an amenable number.

21454452221104 is an abundant number, since it is smaller than the sum of its proper divisors (29077438673744).

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

21454452221104 is a wasteful number, since it uses less digits than its factorization.

21454452221104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13540623 (or 13540610 counting only the distinct ones).

The product of its (nonzero) digits is 102400, while the sum is 37.

Adding to 21454452221104 its reverse (40112225445412), we get a palindrome (61566677666516).

The spelling of 21454452221104 in words is "twenty-one trillion, four hundred fifty-four billion, four hundred fifty-two million, two hundred twenty-one thousand, one hundred four".