221112002002 has 4 divisors (see below), whose sum is σ = 331668003006. Its totient is φ = 110556001000.

The previous prime is 221112001963. The next prime is 221112002021. The reversal of 221112002002 is 200200211122.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 211223887281 + 9888114721 = 459591^2 + 99439^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55278000499 + ... + 55278000502.

Almost surely, 2^221112002002 is an apocalyptic number.

221112002002 is a deficient number, since it is larger than the sum of its proper divisors (110556001004).

221112002002 is a wasteful number, since it uses less digits than its factorization.

221112002002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110556001003.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 221112002002 its reverse (200200211122), we get a palindrome (421312213124).

The spelling of 221112002002 in words is "two hundred twenty-one billion, one hundred twelve million, two thousand, two".