221200220221000 has 64 divisors (see below), whose sum is σ = 518787579024000. Its totient is φ = 88278538737600.

The previous prime is 221200220220977. The next prime is 221200220221051. The reversal of 221200220221000 is 122022002122.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 251497470 + ... + 252375469.

It is an arithmetic number, because the mean of its divisors is an integer number (8106055922250).

Almost surely, 2^{221200220221000} is an apocalyptic number.

221200220221000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221200220221000 is an abundant number, since it is smaller than the sum of its proper divisors (297587358803000).

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

221200220221000 is a wasteful number, since it uses less digits than its factorization.

221200220221000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 503873399 (or 503873385 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 221200220221000 its reverse (122022002122), we get a palindrome (221322242223122).

The spelling of 221200220221000 in words is "two hundred twenty-one trillion, two hundred billion, two hundred twenty million, two hundred twenty-one thousand".