12122102200021 has 4 divisors (see below), whose sum is σ = 13224111490944. Its totient is φ = 11020092909100.

The previous prime is 12122102200007. The next prime is 12122102200063. The reversal of 12122102200021 is 12000220122121.

It is a happy number.

12122102200021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 12122102200021 - 2⁵ = 12122102199989 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12122102199968 and 12122102200004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12122102207021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 551004645445 + ... + 551004645466.

It is an arithmetic number, because the mean of its divisors is an integer number (3306027872736).

Almost surely, 2^{12122102200021} is an apocalyptic number.

12122102200021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12122102200021 is a deficient number, since it is larger than the sum of its proper divisors (1102009290923).

12122102200021 is a wasteful number, since it uses less digits than its factorization.

12122102200021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1102009290922.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 12122102200021 its reverse (12000220122121), we get a palindrome (24122322322142).

The spelling of 12122102200021 in words is "twelve trillion, one hundred twenty-two billion, one hundred two million, two hundred thousand, twenty-one".