221200021010 has 8 divisors (see below), whose sum is σ = 398160037836. Its totient is φ = 88480008400.

The previous prime is 221200021001. The next prime is 221200021027. The reversal of 221200021010 is 10120002122.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 217410510529 + 3789510481 = 466273^2 + 61559^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 221200020982 and 221200021000.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11060001041 + ... + 11060001060.

Almost surely, 2^221200021010 is an apocalyptic number.

221200021010 is a deficient number, since it is larger than the sum of its proper divisors (176960016826).

221200021010 is a wasteful number, since it uses less digits than its factorization.

221200021010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22120002108.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 221200021010 its reverse (10120002122), we get a palindrome (231320023132).

The spelling of 221200021010 in words is "two hundred twenty-one billion, two hundred million, twenty-one thousand, ten".