1012203221121 has 24 divisors (see below), whose sum is σ = 1535062039680. Its totient is φ = 641808722016.

The previous prime is 1012203221111. The next prime is 1012203221177. The reversal of 1012203221121 is 1211223022101.

1012203221121 is a `hidden beast` number, since 1 + 0 + 1 + 220 + 322 + 1 + 121 = 666.

It is not a de Polignac number, because 1012203221121 - 2¹⁷ = 1012203090049 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1012203221094 and 1012203221103.

It is not an unprimeable number, because it can be changed into a prime (1012203221101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 28924105 + ... + 28959078.

It is an arithmetic number, because the mean of its divisors is an integer number (63960918320).

Almost surely, 2^{1012203221121} is an apocalyptic number.

It is an amenable number.

1012203221121 is a deficient number, since it is larger than the sum of its proper divisors (522858818559).

1012203221121 is a wasteful number, since it uses less digits than its factorization.

1012203221121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57883285 (or 57883282 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 1012203221121 its reverse (1211223022101), we get a palindrome (2223426243222).

The spelling of 1012203221121 in words is "one trillion, twelve billion, two hundred three million, two hundred twenty-one thousand, one hundred twenty-one".