321221013113 has 32 divisors (see below), whose sum is σ = 431424844032. Its totient is φ = 230975712000.

The previous prime is 321221013107. The next prime is 321221013181. The reversal of 321221013113 is 311310122123.

It is a happy number.

It is not a de Polignac number, because 321221013113 - 2¹² = 321221009017 is a prime.

It is not an unprimeable number, because it can be changed into a prime (321221013313) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3255695 + ... + 3352907.

It is an arithmetic number, because the mean of its divisors is an integer number (13482026376).

Almost surely, 2^321221013113 is an apocalyptic number.

It is an amenable number.

321221013113 is a deficient number, since it is larger than the sum of its proper divisors (110203830919).

321221013113 is a wasteful number, since it uses less digits than its factorization.

321221013113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100545.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 321221013113 its reverse (311310122123), we get a palindrome (632531135236).

The spelling of 321221013113 in words is "three hundred twenty-one billion, two hundred twenty-one million, thirteen thousand, one hundred thirteen".