221103020003 has 4 divisors (see below), whose sum is σ = 222790829448. Its totient is φ = 219415210560.

The previous prime is 221103019999. The next prime is 221103020023. The reversal of 221103020003 is 300020301122.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 221103020003 - 2² = 221103019999 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 221103020003.

It is not an unprimeable number, because it can be changed into a prime (221103020023) 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, 843904526 + ... + 843904787.

It is an arithmetic number, because the mean of its divisors is an integer number (55697707362).

Almost surely, 2^221103020003 is an apocalyptic number.

221103020003 is a deficient number, since it is larger than the sum of its proper divisors (1687809445).

221103020003 is a wasteful number, since it uses less digits than its factorization.

221103020003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1687809444.

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 221103020003 its reverse (300020301122), we get a palindrome (521123321125).

The spelling of 221103020003 in words is "two hundred twenty-one billion, one hundred three million, twenty thousand, three".