100120202002121 has 16 divisors (see below), whose sum is σ = 117318727680000. Its totient is φ = 83653585254288.

The previous prime is 100120202002027. The next prime is 100120202002187. The reversal of 100120202002121 is 121200202021001.

It is not a de Polignac number, because 100120202002121 - 2¹⁸ = 100120201739977 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 100120202002096 and 100120202002105.

It is not an unprimeable number, because it can be changed into a prime (100120202002921) 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, 333141641 + ... + 333442038.

It is an arithmetic number, because the mean of its divisors is an integer number (7332420480000).

Almost surely, 2^{100120202002121} is an apocalyptic number.

It is an amenable number.

100120202002121 is a deficient number, since it is larger than the sum of its proper divisors (17198525677879).

100120202002121 is an equidigital number, since it uses as much as digits as its factorization.

100120202002121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 666584228.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 100120202002121 its reverse (121200202021001), we get a palindrome (221320404023122).

The spelling of 100120202002121 in words is "one hundred trillion, one hundred twenty billion, two hundred two million, two thousand, one hundred twenty-one".