20010221202012 has 48 divisors (see below), whose sum is σ = 49163022034560. Its totient is φ = 6317074467648.

The previous prime is 20010221202007. The next prime is 20010221202029. The reversal of 20010221202012 is 21020212201002.

It is a super-2 number, since 2×20010221202012² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20010221201982 and 20010221202000.

It is a congruent number.

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, 12748038 + ... + 14231405.

It is an arithmetic number, because the mean of its divisors is an integer number (1024229625720).

Almost surely, 2^{20010221202012} is an apocalyptic number.

It is an amenable number.

20010221202012 is an abundant number, since it is smaller than the sum of its proper divisors (29152800832548).

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

20010221202012 is a wasteful number, since it uses less digits than its factorization.

20010221202012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26982722 (or 26982720 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 20010221202012 its reverse (21020212201002), we get a palindrome (41030433403014).

The spelling of 20010221202012 in words is "twenty trillion, ten billion, two hundred twenty-one million, two hundred two thousand, twelve".