100122120221221 has 16 divisors (see below), whose sum is σ = 114484802402304. Its totient is φ = 85774330225584.

The previous prime is 100122120221213. The next prime is 100122120221281. The reversal of 100122120221221 is 122122021221001.

It is not a de Polignac number, because 100122120221221 - 2³ = 100122120221213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100122120221281) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 103491486 + ... + 104454448.

It is an arithmetic number, because the mean of its divisors is an integer number (7155300150144).

Almost surely, 2^{100122120221221} is an apocalyptic number.

It is an amenable number.

100122120221221 is a deficient number, since it is larger than the sum of its proper divisors (14362682181083).

100122120221221 is an equidigital number, since it uses as much as digits as its factorization.

100122120221221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 970680.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 100122120221221 its reverse (122122021221001), we get a palindrome (222244141442222).

The spelling of 100122120221221 in words is "one hundred trillion, one hundred twenty-two billion, one hundred twenty million, two hundred twenty-one thousand, two hundred twenty-one".