1200421231033 has 4 divisors (see below), whose sum is σ = 1200436114420. Its totient is φ = 1200406347648.

The previous prime is 1200421231003. The next prime is 1200421231111. The reversal of 1200421231033 is 3301321240021.

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 917405742969 + 283015488064 = 957813^2 + 531992^2 .

It is a cyclic number.

It is not a de Polignac number, because 1200421231033 - 2⁹ = 1200421230521 is a prime.

It is a super-2 number, since 2×1200421231033² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1200421230995 and 1200421231013.

It is not an unprimeable number, because it can be changed into a prime (1200421231003) 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, 7320048 + ... + 7482241.

It is an arithmetic number, because the mean of its divisors is an integer number (300109028605).

Almost surely, 2^{1200421231033} is an apocalyptic number.

It is an amenable number.

1200421231033 is a deficient number, since it is larger than the sum of its proper divisors (14883387).

1200421231033 is an equidigital number, since it uses as much as digits as its factorization.

1200421231033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14883386.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 1200421231033 its reverse (3301321240021), we get a palindrome (4501742471054).

The spelling of 1200421231033 in words is "one trillion, two hundred billion, four hundred twenty-one million, two hundred thirty-one thousand, thirty-three".