20010000121120 has 24 divisors (see below), whose sum is σ = 47273625286524. Its totient is φ = 8004000048384.

The previous prime is 20010000121099. The next prime is 20010000121121. The reversal of 20010000121120 is 2112100001002.

It can be written as a sum of positive squares in 2 ways, for example, as 17160372530064 + 2849627591056 = 4142508^2 + 1688084^2 .

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 20010000121097 and 20010000121106.

It is not an unprimeable number, because it can be changed into a prime (20010000121121) 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, 62531250219 + ... + 62531250538.

Almost surely, 2^{20010000121120} is an apocalyptic number.

20010000121120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20010000121120 is an abundant number, since it is smaller than the sum of its proper divisors (27263625165404).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20010000121120 is a wasteful number, since it uses less digits than its factorization.

20010000121120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125062500772 (or 125062500764 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 20010000121120 its reverse (2112100001002), we get a palindrome (22122100122122).

The spelling of 20010000121120 in words is "twenty trillion, ten billion, one hundred twenty-one thousand, one hundred twenty".