221112221002 has 8 divisors (see below), whose sum is σ = 331867059300. Its totient is φ = 110489867904.

The previous prime is 221112220993. The next prime is 221112221039. The reversal of 221112221002 is 200122211122.

It is a happy number.

221112221002 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 203140405521 + 17971815481 = 450711^2 + 134059^2 .

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

It is a super-2 number, since 2×221112221002² (a number of 23 digits) contains 22 as substring.

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, 33117127 + ... + 33123802.

Almost surely, 2^221112221002 is an apocalyptic number.

221112221002 is a deficient number, since it is larger than the sum of its proper divisors (110754838298).

221112221002 is a wasteful number, since it uses less digits than its factorization.

221112221002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66242600.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 221112221002 its reverse (200122211122), we get a palindrome (421234432124).

The spelling of 221112221002 in words is "two hundred twenty-one billion, one hundred twelve million, two hundred twenty-one thousand, two".