21227467600 has 60 divisors (see below), whose sum is σ = 51323977084. Its totient is φ = 8436879360.

The previous prime is 21227467553. The next prime is 21227467601. The reversal of 21227467600 is 676472212.

It can be written as a sum of positive squares in 6 ways, for example, as 1308736 + 21226158864 = 1144^2 + 145692^2 .

It is a super-3 number, since 3×21227467600³ (a number of 32 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 21227467600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21227467601) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 106209 + ... + 231808.

Almost surely, 2^21227467600 is an apocalyptic number.

21227467600 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21227467600 is an abundant number, since it is smaller than the sum of its proper divisors (30096509484).

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

21227467600 is a wasteful number, since it uses less digits than its factorization.

21227467600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 338192 (or 338181 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 37.

The spelling of 21227467600 in words is "twenty-one billion, two hundred twenty-seven million, four hundred sixty-seven thousand, six hundred".