1010220000221 has 4 divisors (see below), whose sum is σ = 1014631441500. Its totient is φ = 1005808558944.

The previous prime is 1010220000193. The next prime is 1010220000239. The reversal of 1010220000221 is 1220000220101.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 865811640100 + 144408360121 = 930490^2 + 380011^2 .

It is a cyclic number.

It is not a de Polignac number, because 1010220000221 - 2⁶ = 1010220000157 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1010220000421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2205720296 + ... + 2205720753.

It is an arithmetic number, because the mean of its divisors is an integer number (253657860375).

Almost surely, 2^{1010220000221} is an apocalyptic number.

It is an amenable number.

1010220000221 is a deficient number, since it is larger than the sum of its proper divisors (4411441279).

1010220000221 is an equidigital number, since it uses as much as digits as its factorization.

1010220000221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4411441278.

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

Adding to 1010220000221 its reverse (1220000220101), we get a palindrome (2230220220322).

The spelling of 1010220000221 in words is "one trillion, ten billion, two hundred twenty million, two hundred twenty-one", and thus it is an aban number.