1010203301221 has 4 divisors (see below), whose sum is σ = 1010215041100. Its totient is φ = 1010191561344.

The previous prime is 1010203301179. The next prime is 1010203301273. The reversal of 1010203301221 is 1221033020101.

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 87621920100 + 922581381121 = 296010^2 + 960511^2 .

It is a cyclic number.

It is not a de Polignac number, because 1010203301221 - 2¹¹ = 1010203299173 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1010203301195 and 1010203301204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1010203301621) 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, 5739906 + ... + 5913283.

It is an arithmetic number, because the mean of its divisors is an integer number (252553760275).

Almost surely, 2^{1010203301221} is an apocalyptic number.

It is an amenable number.

1010203301221 is a deficient number, since it is larger than the sum of its proper divisors (11739879).

1010203301221 is an equidigital number, since it uses as much as digits as its factorization.

1010203301221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11739878.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 1010203301221 its reverse (1221033020101), we get a palindrome (2231236321322).

The spelling of 1010203301221 in words is "one trillion, ten billion, two hundred three million, three hundred one thousand, two hundred twenty-one".