221103101312331 has 32 divisors (see below), whose sum is σ = 348540506979840. Its totient is φ = 121986658488576.

The previous prime is 221103101312263. The next prime is 221103101312371. The reversal of 221103101312331 is 133213101301122.

It is not a de Polignac number, because 221103101312331 - 2¹¹ = 221103101310283 is a prime.

It is a super-2 number, since 2×221103101312331² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (221103101312371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 58769200 + ... + 62418146.

It is an arithmetic number, because the mean of its divisors is an integer number (10891890843120).

Almost surely, 2^{221103101312331} is an apocalyptic number.

221103101312331 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

221103101312331 is a deficient number, since it is larger than the sum of its proper divisors (127437405667509).

221103101312331 is a wasteful number, since it uses less digits than its factorization.

221103101312331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3748483.

The product of its (nonzero) digits is 648, while the sum is 24.

Adding to 221103101312331 its reverse (133213101301122), we get a palindrome (354316202613453).

The spelling of 221103101312331 in words is "two hundred twenty-one trillion, one hundred three billion, one hundred one million, three hundred twelve thousand, three hundred thirty-one".