221121000202003 has 16 divisors (see below), whose sum is σ = 244282722969600. Its totient is φ = 198469378860480.

The previous prime is 221121000201973. The next prime is 221121000202009. The reversal of 221121000202003 is 300202000121122.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221121000202003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221121000202009) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30284575 + ... + 36870007.

It is an arithmetic number, because the mean of its divisors is an integer number (15267670185600).

Almost surely, 2^{221121000202003} is an apocalyptic number.

221121000202003 is a deficient number, since it is larger than the sum of its proper divisors (23161722767597).

221121000202003 is a wasteful number, since it uses less digits than its factorization.

221121000202003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6624162.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 221121000202003 its reverse (300202000121122), we get a palindrome (521323000323125).

The spelling of 221121000202003 in words is "two hundred twenty-one trillion, one hundred twenty-one billion, two hundred two thousand, three".