21226540263310 has 16 divisors (see below), whose sum is σ = 38210468543136. Its totient is φ = 8490016978848.

The previous prime is 21226540263287. The next prime is 21226540263311. The reversal of 21226540263310 is 1336204562212.

It is a super-2 number, since 2×21226540263310² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 21226540263310.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21226540263311) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74741994 + ... + 75025453.

It is an arithmetic number, because the mean of its divisors is an integer number (2388154283946).

Almost surely, 2^{21226540263310} is an apocalyptic number.

21226540263310 is a deficient number, since it is larger than the sum of its proper divisors (16983928279826).

21226540263310 is a wasteful number, since it uses less digits than its factorization.

21226540263310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149781627.

The product of its (nonzero) digits is 103680, while the sum is 37.

The spelling of 21226540263310 in words is "twenty-one trillion, two hundred twenty-six billion, five hundred forty million, two hundred sixty-three thousand, three hundred ten".