1020203231133 has 16 divisors (see below), whose sum is σ = 1364147020800. Its totient is φ = 678199280304.

The previous prime is 1020203231101. The next prime is 1020203231147. The reversal of 1020203231133 is 3311323020201.

It is not a de Polignac number, because 1020203231133 - 2⁵ = 1020203231101 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020203231183) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2032060 + ... + 2483882.

It is an arithmetic number, because the mean of its divisors is an integer number (85259188800).

Almost surely, 2^{1020203231133} is an apocalyptic number.

It is an amenable number.

1020203231133 is a deficient number, since it is larger than the sum of its proper divisors (343943789667).

1020203231133 is a wasteful number, since it uses less digits than its factorization.

1020203231133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 453968.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 1020203231133 its reverse (3311323020201), we get a palindrome (4331526251334).

The spelling of 1020203231133 in words is "one trillion, twenty billion, two hundred three million, two hundred thirty-one thousand, one hundred thirty-three".