1068620221 has 8 divisors (see below), whose sum is σ = 1133066880. Its totient is φ = 1004349888.

The previous prime is 1068620207. The next prime is 1068620243. The reversal of 1068620221 is 1220268601.

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

It is a cyclic number.

It is not a de Polignac number, because 1068620221 - 2¹³ = 1068612029 is a prime.

It is a super-2 number, since 2×1068620221² = 2283898353460177682, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1068620221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1068620521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31491 + ... + 55936.

It is an arithmetic number, because the mean of its divisors is an integer number (141633360).

Almost surely, 2^1068620221 is an apocalyptic number.

It is an amenable number.

1068620221 is a deficient number, since it is larger than the sum of its proper divisors (64446659).

1068620221 is an equidigital number, since it uses as much as digits as its factorization.

1068620221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88163.

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 1068620221 is about 32689.7571266597. The cubic root of 1068620221 is about 1022.3692907445.

Adding to 1068620221 its reverse (1220268601), we get a palindrome (2288888822).

The spelling of 1068620221 in words is "one billion, sixty-eight million, six hundred twenty thousand, two hundred twenty-one".