321220420413111 has 20 divisors (see below), whose sum is σ = 483068243493000. Its totient is φ = 212709719102256.

The previous prime is 321220420413107. The next prime is 321220420413163. The reversal of 321220420413111 is 111314024022123.

321220420413111 is a `hidden beast` number, since 3 + 2 + 1 + 220 + 4 + 20 + 413 + 1 + 1 + 1 = 666.

It is not a de Polignac number, because 321220420413111 - 2² = 321220420413107 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321220420417111) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 13307653041 + ... + 13307677178.

It is an arithmetic number, because the mean of its divisors is an integer number (24153412174650).

Almost surely, 2^{321220420413111} is an apocalyptic number.

321220420413111 is a deficient number, since it is larger than the sum of its proper divisors (161847823079889).

321220420413111 is a wasteful number, since it uses less digits than its factorization.

321220420413111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26615330380 (or 26615330371 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

Adding to 321220420413111 its reverse (111314024022123), we get a palindrome (432534444435234).

The spelling of 321220420413111 in words is "three hundred twenty-one trillion, two hundred twenty billion, four hundred twenty million, four hundred thirteen thousand, one hundred eleven".