223220210320 has 20 divisors (see below), whose sum is σ = 518986989180. Its totient is φ = 89288084096.

The previous prime is 223220210267. The next prime is 223220210321. The reversal of 223220210320 is 23012022322.

It can be written as a sum of positive squares in 2 ways, for example, as 148678105744 + 74542104576 = 385588^2 + 273024^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-3 number, since 3×223220210320³ (a number of 35 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (223220210321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1395126235 + ... + 1395126394.

It is an arithmetic number, because the mean of its divisors is an integer number (25949349459).

Almost surely, 2^223220210320 is an apocalyptic number.

223220210320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

223220210320 is an abundant number, since it is smaller than the sum of its proper divisors (295766778860).

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

223220210320 is a wasteful number, since it uses less digits than its factorization.

223220210320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2790252642 (or 2790252636 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 19.

Adding to 223220210320 its reverse (23012022322), we get a palindrome (246232232642).

The spelling of 223220210320 in words is "two hundred twenty-three billion, two hundred twenty million, two hundred ten thousand, three hundred twenty".