221020221221003 has 2 divisors, whose sum is σ = 221020221221004. Its totient is φ = 221020221221002.

The previous prime is 221020221220949. The next prime is 221020221221069. The reversal of 221020221221003 is 300122122020122.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 221020221221003 - 2¹⁴ = 221020221204619 is a prime.

It is a super-2 number, since 2×221020221221003² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (221020221220003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110510110610501 + 110510110610502.

It is an arithmetic number, because the mean of its divisors is an integer number (110510110610502).

Almost surely, 2^{221020221221003} is an apocalyptic number.

221020221221003 is a deficient number, since it is larger than the sum of its proper divisors (1).

221020221221003 is an equidigital number, since it uses as much as digits as its factorization.

221020221221003 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 221020221221003 its reverse (300122122020122), we get a palindrome (521142343241125).

The spelling of 221020221221003 in words is "two hundred twenty-one trillion, twenty billion, two hundred twenty-one million, two hundred twenty-one thousand, three".