21226052266276 has 243 divisors, whose sum is σ = 44962520487129. Its totient is φ = 8757316339200.

The previous prime is 21226052266217. The next prime is 21226052266303. The reversal of 21226052266276 is 67266225062212.

The square root of 21226052266276 is 4607174.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 13 ways, for example, as 14115424702500 + 7110627563776 = 3757050^2 + 2666576^2 .

It is a Duffinian number.

It is an unprimeable number.

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 80 ways as a sum of consecutive naturals, for example, 117271006906 + ... + 117271007086.

Almost surely, 2^{21226052266276} is an apocalyptic number.

21226052266276 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

21226052266276 is the 4607174-th square number.

It is an amenable number.

21226052266276 is an abundant number, since it is smaller than the sum of its proper divisors (23736468220853).

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

21226052266276 is a wasteful number, since it uses less digits than its factorization.

21226052266276 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 592 (or 296 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 49.

The spelling of 21226052266276 in words is "twenty-one trillion, two hundred twenty-six billion, fifty-two million, two hundred sixty-six thousand, two hundred seventy-six".