1011221012203 has 4 divisors (see below), whose sum is σ = 1064443170760. Its totient is φ = 957998853648.

The previous prime is 1011221012171. The next prime is 1011221012227. The reversal of 1011221012203 is 3022101221101.

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

It is a cyclic number.

It is not a de Polignac number, because 1011221012203 - 2⁵ = 1011221012171 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1011221019203) 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, 26611079250 + ... + 26611079287.

It is an arithmetic number, because the mean of its divisors is an integer number (266110792690).

Almost surely, 2^{1011221012203} is an apocalyptic number.

1011221012203 is a deficient number, since it is larger than the sum of its proper divisors (53222158557).

1011221012203 is an equidigital number, since it uses as much as digits as its factorization.

1011221012203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53222158556.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 1011221012203 its reverse (3022101221101), we get a palindrome (4033322233304).

The spelling of 1011221012203 in words is "one trillion, eleven billion, two hundred twenty-one million, twelve thousand, two hundred three".