20012121012012 has 48 divisors (see below), whose sum is σ = 49153459031040. Its totient is φ = 6319503876672.

The previous prime is 20012121011969. The next prime is 20012121012047. The reversal of 20012121012012 is 21021012121002.

It is a junction number, because it is equal to n+sod(n) for n = 20012121011982 and 20012121012000.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12447333 + ... + 13962819.

It is an arithmetic number, because the mean of its divisors is an integer number (1024030396480).

Almost surely, 2^{20012121012012} is an apocalyptic number.

It is an amenable number.

20012121012012 is an abundant number, since it is smaller than the sum of its proper divisors (29141338019028).

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

20012121012012 is a wasteful number, since it uses less digits than its factorization.

20012121012012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1573430 (or 1573428 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 20012121012012 its reverse (21021012121002), we get a palindrome (41033133133014).

The spelling of 20012121012012 in words is "twenty trillion, twelve billion, one hundred twenty-one million, twelve thousand, twelve".