21223220310300 has 72 divisors (see below), whose sum is σ = 61406775447472. Its totient is φ = 5659440192000.

The previous prime is 21223220310293. The next prime is 21223220310349. The reversal of 21223220310300 is 301302232212.

It is a happy number.

It is a super-5 number, since 5×21223220310300⁵ (a number of 68 digits) contains 55555 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20851230 + ... + 21845370.

Almost surely, 2^{21223220310300} is an apocalyptic number.

21223220310300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21223220310300 is an abundant number, since it is smaller than the sum of its proper divisors (40183555137172).

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

21223220310300 is a wasteful number, since it uses less digits than its factorization.

21223220310300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1065319 (or 1065312 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 21223220310300 its reverse (301302232212), we get a palindrome (21524522542512).

The spelling of 21223220310300 in words is "twenty-one trillion, two hundred twenty-three billion, two hundred twenty million, three hundred ten thousand, three hundred".