20121200100122 has 16 divisors (see below), whose sum is σ = 32925669547392. Its totient is φ = 9145980772320.

The previous prime is 20121200100121. The next prime is 20121200100143. The reversal of 20121200100122 is 22100100212102.

It is a junction number, because it is equal to n+sod(n) for n = 20121200100097 and 20121200100106.

It is not an unprimeable number, because it can be changed into a prime (20121200100121) 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, 18052598 + ... + 19134750.

It is an arithmetic number, because the mean of its divisors is an integer number (2057854346712).

Almost surely, 2^{20121200100122} is an apocalyptic number.

20121200100122 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20121200100122 is a deficient number, since it is larger than the sum of its proper divisors (12804469447270).

20121200100122 is a wasteful number, since it uses less digits than its factorization.

20121200100122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1927333.

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

Adding to 20121200100122 its reverse (22100100212102), we get a palindrome (42221300312224).

The spelling of 20121200100122 in words is "twenty trillion, one hundred twenty-one billion, two hundred million, one hundred thousand, one hundred twenty-two".