221112222122002 has 8 divisors (see below), whose sum is σ = 331668428017212. Its totient is φ = 110556079449600.

The previous prime is 221112222121991. The next prime is 221112222122123. The reversal of 221112222122002 is 200221222211122.

It can be written as a sum of positive squares in 2 ways, for example, as 214387841876121 + 6724380245881 = 14641989^2 + 2593141^2 .

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

It is a super-2 number, since 2×221112222122002² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5793999 + ... + 21812722.

Almost surely, 2^{221112222122002} is an apocalyptic number.

221112222122002 is a deficient number, since it is larger than the sum of its proper divisors (110556205895210).

221112222122002 is a wasteful number, since it uses less digits than its factorization.

221112222122002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31611404.

The product of its (nonzero) digits is 512, while the sum is 22.

Adding to 221112222122002 its reverse (200221222211122), we get a palindrome (421333444333124).

The spelling of 221112222122002 in words is "two hundred twenty-one trillion, one hundred twelve billion, two hundred twenty-two million, one hundred twenty-two thousand, two".