321111211201 has 12 divisors (see below), whose sum is σ = 359055528912. Its totient is φ = 284799284000.

The previous prime is 321111211189. The next prime is 321111211229. The reversal of 321111211201 is 102112111123.

It is a happy number.

It is not a de Polignac number, because 321111211201 - 2¹³ = 321111203009 is a prime.

It is a super-2 number, since 2×321111211201² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (321111211231) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8664415 + ... + 8701396.

It is an arithmetic number, because the mean of its divisors is an integer number (29921294076).

Almost surely, 2^321111211201 is an apocalyptic number.

It is an amenable number.

321111211201 is a deficient number, since it is larger than the sum of its proper divisors (37944317711).

321111211201 is a wasteful number, since it uses less digits than its factorization.

321111211201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17365904 (or 17365863 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 16.

Adding to 321111211201 its reverse (102112111123), we get a palindrome (423223322324).

The spelling of 321111211201 in words is "three hundred twenty-one billion, one hundred eleven million, two hundred eleven thousand, two hundred one".