221200020010 has 8 divisors (see below), whose sum is σ = 398160036036. Its totient is φ = 88480008000.

The previous prime is 221200019993. The next prime is 221200020029. The reversal of 221200020010 is 10020002122.

It can be written as a sum of positive squares in 2 ways, for example, as 190910446489 + 30289573521 = 436933^2 + 174039^2 .

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

It is a Harshad number since it is a multiple of its sum of digits (10), and also a Moran number because the ratio is a prime number: 22120002001 = 221200020010 / (2 + 2 + 1 + 2 + 0 + 0 + 0 + 2 + 0 + 0 + 1 + 0).

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, 11060000991 + ... + 11060001010.

Almost surely, 2^221200020010 is an apocalyptic number.

221200020010 is a deficient number, since it is larger than the sum of its proper divisors (176960016026).

221200020010 is a wasteful number, since it uses less digits than its factorization.

221200020010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22120002008.

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 221200020010 its reverse (10020002122), we get a palindrome (231220022132).

The spelling of 221200020010 in words is "two hundred twenty-one billion, two hundred million, twenty thousand, ten".