221120231013 has 24 divisors (see below), whose sum is σ = 349194383616. Its totient is φ = 133718990400.

The previous prime is 221120230973. The next prime is 221120231029. The reversal of 221120231013 is 310132021122.

221120231013 is a `hidden beast` number, since 221 + 120 + 2 + 310 + 13 = 666.

It is not a de Polignac number, because 221120231013 - 2⁹ = 221120230501 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221120231083) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2398453 + ... + 2488938.

It is an arithmetic number, because the mean of its divisors is an integer number (14549765984).

Almost surely, 2^221120231013 is an apocalyptic number.

It is an amenable number.

221120231013 is a deficient number, since it is larger than the sum of its proper divisors (128074152603).

221120231013 is a wasteful number, since it uses less digits than its factorization.

221120231013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4887865 (or 4887862 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 221120231013 its reverse (310132021122), we get a palindrome (531252252135).

The spelling of 221120231013 in words is "two hundred twenty-one billion, one hundred twenty million, two hundred thirty-one thousand, thirteen".