220001101000 has 64 divisors (see below), whose sum is σ = 516560269680. Its totient is φ = 87699980800.

The previous prime is 220001100997. The next prime is 220001101037. The reversal of 220001101000 is 101100022.

It can be written as a sum of positive squares in 8 ways, for example, as 1764504036 + 218236596964 = 42006^2 + 467158^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 82429 + ... + 668428.

Almost surely, 2^220001101000 is an apocalyptic number.

220001101000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220001101000 is an abundant number, since it is smaller than the sum of its proper divisors (296559168680).

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

220001101000 is a wasteful number, since it uses less digits than its factorization.

220001101000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 751171 (or 751157 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 7.

Adding to 220001101000 its reverse (101100022), we get a palindrome (220102201022).

The spelling of 220001101000 in words is "two hundred twenty billion, one million, one hundred one thousand".