321203020011 has 12 divisors (see below), whose sum is σ = 440158417272. Its totient is φ = 208347902208.

The previous prime is 321203020009. The next prime is 321203020043. The reversal of 321203020011 is 110020302123.

It is not a de Polignac number, because 321203020011 - 2¹ = 321203020009 is a prime.

It is not an unprimeable number, because it can be changed into a prime (321203020711) 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 11 ways as a sum of consecutive naturals, for example, 39100230 + ... + 39108443.

It is an arithmetic number, because the mean of its divisors is an integer number (36679868106).

Almost surely, 2^321203020011 is an apocalyptic number.

321203020011 is a deficient number, since it is larger than the sum of its proper divisors (118955397261).

321203020011 is an equidigital number, since it uses as much as digits as its factorization.

321203020011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78208750 (or 78208713 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 321203020011 its reverse (110020302123), we get a palindrome (431223322134).

The spelling of 321203020011 in words is "three hundred twenty-one billion, two hundred three million, twenty thousand, eleven".