100120222021 has 8 divisors (see below), whose sum is σ = 103589980920. Its totient is φ = 96651619008.

The previous prime is 100120222019. The next prime is 100120222031. The reversal of 100120222021 is 120222021001.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 7015905121 + 93104316900 = 83761^2 + 305130^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 100120222021 - 2¹ = 100120222019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100120221992 and 100120222010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100120222031) 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 7 ways as a sum of consecutive naturals, for example, 110866 + ... + 461011.

It is an arithmetic number, because the mean of its divisors is an integer number (12948747615).

Almost surely, 2^100120222021 is an apocalyptic number.

It is an amenable number.

100120222021 is a deficient number, since it is larger than the sum of its proper divisors (3469758899).

100120222021 is an equidigital number, since it uses as much as digits as its factorization.

100120222021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 577943.

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

Adding to 100120222021 its reverse (120222021001), we get a palindrome (220342243022).

The spelling of 100120222021 in words is "one hundred billion, one hundred twenty million, two hundred twenty-two thousand, twenty-one".