220220121120949 has 2 divisors, whose sum is σ = 220220121120950. Its totient is φ = 220220121120948.

The previous prime is 220220121120911. The next prime is 220220121121003. The reversal of 220220121120949 is 949021121022022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 203769715192849 + 16450405928100 = 14274793^2 + 4055910^2 .

It is a cyclic number.

It is not a de Polignac number, because 220220121120949 - 2¹⁹ = 220220120596661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220220121120149) 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, 110110060560474 + 110110060560475.

It is an arithmetic number, because the mean of its divisors is an integer number (110110060560475).

Almost surely, 2^{220220121120949} is an apocalyptic number.

It is an amenable number.

220220121120949 is a deficient number, since it is larger than the sum of its proper divisors (1).

220220121120949 is an equidigital number, since it uses as much as digits as its factorization.

220220121120949 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20736, while the sum is 37.

The spelling of 220220121120949 in words is "two hundred twenty trillion, two hundred twenty billion, one hundred twenty-one million, one hundred twenty thousand, nine hundred forty-nine".