221112100202002 has 4 divisors (see below), whose sum is σ = 331668150303006. Its totient is φ = 110556050101000.

The previous prime is 221112100201973. The next prime is 221112100202029. The reversal of 221112100202002 is 200202001211122.

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., 217705273915921 + 3406826286081 = 14754839^2 + 1845759^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55278025050499 + ... + 55278025050502.

Almost surely, 2^{221112100202002} is an apocalyptic number.

221112100202002 is a deficient number, since it is larger than the sum of its proper divisors (110556050101004).

221112100202002 is a wasteful number, since it uses less digits than its factorization.

221112100202002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110556050101003.

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

Adding to 221112100202002 its reverse (200202001211122), we get a palindrome (421314101413124).

The spelling of 221112100202002 in words is "two hundred twenty-one trillion, one hundred twelve billion, one hundred million, two hundred two thousand, two".