221321123122 has 8 divisors (see below), whose sum is σ = 362161837872. Its totient is φ = 100600510500.

The previous prime is 221321123117. The next prime is 221321123131.

221321123122 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Harshad number since it is a multiple of its sum of digits (22), and also a Moran number because the ratio is a prime number: 10060051051 = 221321123122 / (2 + 2 + 1 + 3 + 2 + 1 + 1 + 2 + 3 + 1 + 2 + 2).

It is a junction number, because it is equal to n+sod(n) for n = 221321123093 and 221321123102.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5030025504 + ... + 5030025547.

It is an arithmetic number, because the mean of its divisors is an integer number (45270229734).

Almost surely, 2^221321123122 is an apocalyptic number.

221321123122 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

221321123122 is a deficient number, since it is larger than the sum of its proper divisors (140840714750).

221321123122 is a wasteful number, since it uses less digits than its factorization.

221321123122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10060051064.

The product of its digits is 576, while the sum is 22.

It can be divided in two parts, 221321 and 123122, that added together give a palindrome (344443).

The spelling of 221321123122 in words is "two hundred twenty-one billion, three hundred twenty-one million, one hundred twenty-three thousand, one hundred twenty-two".