20103321221029 has 2 divisors, whose sum is σ = 20103321221030. Its totient is φ = 20103321221028.

The previous prime is 20103321220933. The next prime is 20103321221033. The reversal of 20103321221029 is 92012212330102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14527456020100 + 5575865200929 = 3811490^2 + 2361327^2 .

It is a cyclic number.

It is not a de Polignac number, because 20103321221029 - 2¹⁹ = 20103320696741 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20103321220988 and 20103321221006.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20103321221429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10051660610514 + 10051660610515.

It is an arithmetic number, because the mean of its divisors is an integer number (10051660610515).

Almost surely, 2^{20103321221029} is an apocalyptic number.

It is an amenable number.

20103321221029 is a deficient number, since it is larger than the sum of its proper divisors (1).

20103321221029 is an equidigital number, since it uses as much as digits as its factorization.

20103321221029 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 28.

The spelling of 20103321221029 in words is "twenty trillion, one hundred three billion, three hundred twenty-one million, two hundred twenty-one thousand, twenty-nine".