12102100021121 has 8 divisors (see below), whose sum is σ = 13249952635584. Its totient is φ = 10962191023920.

The previous prime is 12102100021111. The next prime is 12102100021159. The reversal of 12102100021121 is 12112000120121.

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 12102100021121 - 2⁶ = 12102100021057 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12102100021096 and 12102100021105.

It is not an unprimeable number, because it can be changed into a prime (12102100021111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1985901125 + ... + 1985907218.

It is an arithmetic number, because the mean of its divisors is an integer number (1656244079448).

Almost surely, 2^{12102100021121} is an apocalyptic number.

12102100021121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12102100021121 is a deficient number, since it is larger than the sum of its proper divisors (1147852614463).

12102100021121 is a wasteful number, since it uses less digits than its factorization.

12102100021121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3971808631.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 12102100021121 its reverse (12112000120121), we get a palindrome (24214100141242).

The spelling of 12102100021121 in words is "twelve trillion, one hundred two billion, one hundred million, twenty-one thousand, one hundred twenty-one".