20002012121120 has 24 divisors (see below), whose sum is σ = 47254753636524. Its totient is φ = 8000804848384.

The previous prime is 20002012121059. The next prime is 20002012121123. The reversal of 20002012121120 is 2112121020002.

It can be written as a sum of positive squares in 2 ways, for example, as 20001968190736 + 43930384 = 4472356^2 + 6628^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20002012121095 and 20002012121104.

It is not an unprimeable number, because it can be changed into a prime (20002012121123) 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, 62506287719 + ... + 62506288038.

Almost surely, 2^{20002012121120} is an apocalyptic number.

20002012121120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20002012121120 is an abundant number, since it is smaller than the sum of its proper divisors (27252741515404).

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

20002012121120 is a wasteful number, since it uses less digits than its factorization.

20002012121120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125012575772 (or 125012575764 counting only the distinct ones).

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

Adding to 20002012121120 its reverse (2112121020002), we get a palindrome (22114133141122).

The spelling of 20002012121120 in words is "twenty trillion, two billion, twelve million, one hundred twenty-one thousand, one hundred twenty".