120200100202021 has 12 divisors (see below), whose sum is σ = 144646144509420. Its totient is φ = 99475944993600.

The previous prime is 120200100202019. The next prime is 120200100202109. The reversal of 120200100202021 is 120202001002021.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 60945345562500 + 59254754639521 = 7806750^2 + 7697711^2 .

It is not a de Polignac number, because 120200100202021 - 2¹ = 120200100202019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120200100201992 and 120200100202010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120200100202121) 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 in 11 ways as a sum of consecutive naturals, for example, 42294192880 + ... + 42294195721.

It is an arithmetic number, because the mean of its divisors is an integer number (12053845375785).

Almost surely, 2^{120200100202021} is an apocalyptic number.

It is an amenable number.

120200100202021 is a deficient number, since it is larger than the sum of its proper divisors (24446044307399).

120200100202021 is an equidigital number, since it uses as much as digits as its factorization.

120200100202021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84588388644 (or 84588388637 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 120200100202021 its reverse (120202001002021), we get a palindrome (240402101204042).

The spelling of 120200100202021 in words is "one hundred twenty trillion, two hundred billion, one hundred million, two hundred two thousand, twenty-one".