1200684860021 has 8 divisors (see below), whose sum is σ = 1220563212288. Its totient is φ = 1180812798000.

The previous prime is 1200684859993. The next prime is 1200684860027.

It is a happy number.

1200684860021 is nontrivially palindromic in base 10.

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 1200684860021 - 2³⁸ = 925806953077 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200684860027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1186865 + ... + 1951926.

It is an arithmetic number, because the mean of its divisors is an integer number (152570401536).

Almost surely, 2^{1200684860021} is an apocalyptic number.

It is an amenable number.

1200684860021 is a deficient number, since it is larger than the sum of its proper divisors (19878352267).

1200684860021 is an equidigital number, since it uses as much as digits as its factorization.

1200684860021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3145123.

The product of its (nonzero) digits is 36864, while the sum is 38.

The spelling of 1200684860021 in words is "one trillion, two hundred billion, six hundred eighty-four million, eight hundred sixty thousand, twenty-one".