1200350530021 has 4 divisors (see below), whose sum is σ = 1200532215232. Its totient is φ = 1200168844812.

The previous prime is 1200350530007. The next prime is 1200350530097.

1200350530021 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1200350530021 - 2³¹ = 1198203046373 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1200350529974 and 1200350530001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200350530321) 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, 90832695 + ... + 90845908.

It is an arithmetic number, because the mean of its divisors is an integer number (300133053808).

Almost surely, 2^{1200350530021} is an apocalyptic number.

It is an amenable number.

1200350530021 is a deficient number, since it is larger than the sum of its proper divisors (181685211).

1200350530021 is an equidigital number, since it uses as much as digits as its factorization.

1200350530021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181685210.

The product of its (nonzero) digits is 900, while the sum is 22.

It can be divided in two parts, 1200350 and 530021, that added together give a palindrome (1730371).

The spelling of 1200350530021 in words is "one trillion, two hundred billion, three hundred fifty million, five hundred thirty thousand, twenty-one".