21267633310 has 64 divisors (see below), whose sum is σ = 47770145280. Its totient is φ = 6623003520.

The previous prime is 21267633293. The next prime is 21267633313. The reversal of 21267633310 is 1333676212.

It is a super-2 number, since 2×21267633310² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21267633313) 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 31 ways as a sum of consecutive naturals, for example, 902356 + ... + 925624.

It is an arithmetic number, because the mean of its divisors is an integer number (746408520).

Almost surely, 2^21267633310 is an apocalyptic number.

21267633310 is an abundant number, since it is smaller than the sum of its proper divisors (26502511970).

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

21267633310 is a wasteful number, since it uses less digits than its factorization.

21267633310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24481.

The product of its (nonzero) digits is 27216, while the sum is 34.

The spelling of 21267633310 in words is "twenty-one billion, two hundred sixty-seven million, six hundred thirty-three thousand, three hundred ten".