1250433221021 has 4 divisors (see below), whose sum is σ = 1261499001852. Its totient is φ = 1239367440192.

The previous prime is 1250433220979. The next prime is 1250433221033. The reversal of 1250433221021 is 1201223340521.

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 607893105625 + 642540115396 = 779675^2 + 801586^2 .

It is a cyclic number.

It is not a de Polignac number, because 1250433221021 - 2¹⁴ = 1250433204637 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1250433221071) 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 3 ways as a sum of consecutive naturals, for example, 5532890246 + ... + 5532890471.

It is an arithmetic number, because the mean of its divisors is an integer number (315374750463).

Almost surely, 2^{1250433221021} is an apocalyptic number.

It is an amenable number.

1250433221021 is a deficient number, since it is larger than the sum of its proper divisors (11065780831).

1250433221021 is a wasteful number, since it uses less digits than its factorization.

1250433221021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11065780830.

The product of its (nonzero) digits is 2880, while the sum is 26.

Adding to 1250433221021 its reverse (1201223340521), we get a palindrome (2451656561542).

The spelling of 1250433221021 in words is "one trillion, two hundred fifty billion, four hundred thirty-three million, two hundred twenty-one thousand, twenty-one".