20022021001212 has 12 divisors (see below), whose sum is σ = 46718049002856. Its totient is φ = 6674007000400.

The previous prime is 20022021001189. The next prime is 20022021001253. The reversal of 20022021001212 is 21210012022002.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 20022021001191 and 20022021001200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 834250875039 + ... + 834250875062.

It is an arithmetic number, because the mean of its divisors is an integer number (3893170750238).

Almost surely, 2^{20022021001212} is an apocalyptic number.

It is an amenable number.

20022021001212 is an abundant number, since it is smaller than the sum of its proper divisors (26696028001644).

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

20022021001212 is a wasteful number, since it uses less digits than its factorization.

20022021001212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1668501750108 (or 1668501750106 counting only the distinct ones).

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

Adding to 20022021001212 its reverse (21210012022002), we get a palindrome (41232033023214).

The spelling of 20022021001212 in words is "twenty trillion, twenty-two billion, twenty-one million, one thousand, two hundred twelve".