20021200010012 has 24 divisors (see below), whose sum is σ = 36881840755200. Its totient is φ = 9483550732656.

The previous prime is 20021200009997. The next prime is 20021200010041. The reversal of 20021200010012 is 21001000212002.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20021200009975 and 20021200010002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1739939 + ... + 6562757.

It is an arithmetic number, because the mean of its divisors is an integer number (1536743364800).

Almost surely, 2^{20021200010012} is an apocalyptic number.

It is an amenable number.

20021200010012 is a deficient number, since it is larger than the sum of its proper divisors (16860640745188).

20021200010012 is a wasteful number, since it uses less digits than its factorization.

20021200010012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4877465 (or 4877463 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 20021200010012 its reverse (21001000212002), we get a palindrome (41022200222014).

The spelling of 20021200010012 in words is "twenty trillion, twenty-one billion, two hundred million, ten thousand, twelve".