221121011003 has 2 divisors, whose sum is σ = 221121011004. Its totient is φ = 221121011002.

The previous prime is 221121010997. The next prime is 221121011051. The reversal of 221121011003 is 300110121122.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 221121011003 - 2⁴ = 221121010987 is a prime.

It is not a weakly prime, because it can be changed into another prime (221121011063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110560505501 + 110560505502.

It is an arithmetic number, because the mean of its divisors is an integer number (110560505502).

Almost surely, 2^221121011003 is an apocalyptic number.

221121011003 is a deficient number, since it is larger than the sum of its proper divisors (1).

221121011003 is an equidigital number, since it uses as much as digits as its factorization.

221121011003 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 221121011003 its reverse (300110121122), we get a palindrome (521231132125).

The spelling of 221121011003 in words is "two hundred twenty-one billion, one hundred twenty-one million, eleven thousand, three".