1203213001021 has 8 divisors (see below), whose sum is σ = 1226434032824. Its totient is φ = 1180174095360.

The previous prime is 1203213001013. The next prime is 1203213001031. The reversal of 1203213001021 is 1201003123021.

It can be written as a sum of positive squares in 4 ways, for example, as 104099796025 + 1099113204996 = 322645^2 + 1048386^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1203213001021 - 2³ = 1203213001013 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1203213000986 and 1203213001004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1203213001031) 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 7 ways as a sum of consecutive naturals, for example, 45518196 + ... + 45544621.

It is an arithmetic number, because the mean of its divisors is an integer number (153304254103).

Almost surely, 2^{1203213001021} is an apocalyptic number.

It is an amenable number.

1203213001021 is a deficient number, since it is larger than the sum of its proper divisors (23221031803).

1203213001021 is an equidigital number, since it uses as much as digits as its factorization.

1203213001021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91063071.

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

Adding to 1203213001021 its reverse (1201003123021), we get a palindrome (2404216124042).

The spelling of 1203213001021 in words is "one trillion, two hundred three billion, two hundred thirteen million, one thousand, twenty-one".