1206420246021 has 16 divisors (see below), whose sum is σ = 1650869337600. Its totient is φ = 783398621040.

The previous prime is 1206420246001. The next prime is 1206420246047.

1206420246021 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 1206420246021 - 2⁷ = 1206420245893 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1206420246021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1206420246001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34102471 + ... + 34137828.

It is an arithmetic number, because the mean of its divisors is an integer number (103179333600).

Almost surely, 2^{1206420246021} is an apocalyptic number.

It is an amenable number.

1206420246021 is a deficient number, since it is larger than the sum of its proper divisors (444449091579).

1206420246021 is an equidigital number, since it uses as much as digits as its factorization.

1206420246021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68240456.

The product of its (nonzero) digits is 9216, while the sum is 30.

The spelling of 1206420246021 in words is "one trillion, two hundred six billion, four hundred twenty million, two hundred forty-six thousand, twenty-one".