21220703153200 has 120 divisors (see below), whose sum is σ = 52381362846960. Its totient is φ = 8258386329600.

The previous prime is 21220703153179. The next prime is 21220703153201. The reversal of 21220703153200 is 235130702212.

It is not an unprimeable number, because it can be changed into a prime (21220703153201) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2345761 + ... + 6924160.

It is an arithmetic number, because the mean of its divisors is an integer number (436511357058).

Almost surely, 2^{21220703153200} is an apocalyptic number.

21220703153200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21220703153200 is an abundant number, since it is smaller than the sum of its proper divisors (31160659693760).

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

21220703153200 is a wasteful number, since it uses less digits than its factorization.

21220703153200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9270095 (or 9270084 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 28.

Adding to 21220703153200 its reverse (235130702212), we get a palindrome (21455833855412).

The spelling of 21220703153200 in words is "twenty-one trillion, two hundred twenty billion, seven hundred three million, one hundred fifty-three thousand, two hundred".