20021201002012 has 24 divisors (see below), whose sum is σ = 40061570336480. Its totient is φ = 8576407215360.

The previous prime is 20021201001979. The next prime is 20021201002027. The reversal of 20021201002012 is 21020010212002.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20021201001983 and 20021201002001.

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, 171086289 + ... + 171203272.

Almost surely, 2^{20021201002012} is an apocalyptic number.

It is an amenable number.

20021201002012 is an abundant number, since it is smaller than the sum of its proper divisors (20040369334468).

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

20021201002012 is a wasteful number, since it uses less digits than its factorization.

20021201002012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 342291661 (or 342291659 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 20021201002012 its reverse (21020010212002), we get a palindrome (41041211214014).

The spelling of 20021201002012 in words is "twenty trillion, twenty-one billion, two hundred one million, two thousand, twelve".