1200321021019 has 4 divisors (see below), whose sum is σ = 1205562597760. Its totient is φ = 1195079444280.

The previous prime is 1200321021013. The next prime is 1200321021023. The reversal of 1200321021019 is 9101201230021.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1200321021019 - 2⁷ = 1200321020891 is a prime.

It is a super-2 number, since 2×1200321021019² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1200321021013) 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, 2620788027 + ... + 2620788484.

It is an arithmetic number, because the mean of its divisors is an integer number (301390649440).

Almost surely, 2^{1200321021019} is an apocalyptic number.

1200321021019 is a deficient number, since it is larger than the sum of its proper divisors (5241576741).

1200321021019 is an equidigital number, since it uses as much as digits as its factorization.

1200321021019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5241576740.

The product of its (nonzero) digits is 216, while the sum is 22.

The spelling of 1200321021019 in words is "one trillion, two hundred billion, three hundred twenty-one million, twenty-one thousand, nineteen".