221112122002 has 8 divisors (see below), whose sum is σ = 334711010700. Its totient is φ = 109541785104.

The previous prime is 221112121973. The next prime is 221112122003. The reversal of 221112122002 is 200221211122.

It is a happy number.

221112122002 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 196409398761 + 24702723241 = 443181^2 + 157171^2 .

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

It is not an unprimeable number, because it can be changed into a prime (221112122003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 507137677 + ... + 507138112.

Almost surely, 2^221112122002 is an apocalyptic number.

221112122002 is a deficient number, since it is larger than the sum of its proper divisors (113598888698).

221112122002 is a wasteful number, since it uses less digits than its factorization.

221112122002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1014275900.

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

Adding to 221112122002 its reverse (200221211122), we get a palindrome (421333333124).

The spelling of 221112122002 in words is "two hundred twenty-one billion, one hundred twelve million, one hundred twenty-two thousand, two".