21121200200122 has 8 divisors (see below), whose sum is σ = 34561963963872. Its totient is φ = 9600545545500.

The previous prime is 21121200200083. The next prime is 21121200200123. The reversal of 21121200200122 is 22100200212112.

It is a happy number.

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

It is a super-2 number, since 2×21121200200122² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21121200200096 and 21121200200105.

It is not an unprimeable number, because it can be changed into a prime (21121200200123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 480027277254 + ... + 480027277297.

It is an arithmetic number, because the mean of its divisors is an integer number (4320245495484).

Almost surely, 2^{21121200200122} is an apocalyptic number.

21121200200122 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21121200200122 is a deficient number, since it is larger than the sum of its proper divisors (13440763763750).

21121200200122 is a wasteful number, since it uses less digits than its factorization.

21121200200122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 960054554564.

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

Adding to 21121200200122 its reverse (22100200212112), we get a palindrome (43221400412234).

The spelling of 21121200200122 in words is "twenty-one trillion, one hundred twenty-one billion, two hundred million, two hundred thousand, one hundred twenty-two".