321110013212 has 48 divisors (see below), whose sum is σ = 569112136992. Its totient is φ = 158523125760.

The previous prime is 321110013187. The next prime is 321110013269. The reversal of 321110013212 is 212310011123.

It is a super-2 number, since 2×321110013212² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 68015012 + ... + 68019732.

It is an arithmetic number, because the mean of its divisors is an integer number (11856502854).

Almost surely, 2^321110013212 is an apocalyptic number.

It is an amenable number.

321110013212 is a deficient number, since it is larger than the sum of its proper divisors (248002123780).

321110013212 is a wasteful number, since it uses less digits than its factorization.

321110013212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5558 (or 5556 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 321110013212 its reverse (212310011123), we get a palindrome (533420024335).

The spelling of 321110013212 in words is "three hundred twenty-one billion, one hundred ten million, thirteen thousand, two hundred twelve".