21226352445 has 24 divisors (see below), whose sum is σ = 36797728032. Its totient is φ = 11319064800.

The previous prime is 21226352419. The next prime is 21226352449. The reversal of 21226352445 is 54425362212.

21226352445 is a `hidden beast` number, since 2 + 12 + 2 + 635 + 2 + 4 + 4 + 5 = 666.

It is not a de Polignac number, because 21226352445 - 2⁷ = 21226352317 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21226352449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 315430 + ... + 376760.

It is an arithmetic number, because the mean of its divisors is an integer number (1533238668).

Almost surely, 2^21226352445 is an apocalyptic number.

It is an amenable number.

21226352445 is a deficient number, since it is larger than the sum of its proper divisors (15571375587).

21226352445 is a wasteful number, since it uses less digits than its factorization.

21226352445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69033 (or 69030 counting only the distinct ones).

The product of its digits is 115200, while the sum is 36.

The spelling of 21226352445 in words is "twenty-one billion, two hundred twenty-six million, three hundred fifty-two thousand, four hundred forty-five".