20022021021212 has 48 divisors (see below), whose sum is σ = 41525598266880. Its totient is φ = 8267893031232.

The previous prime is 20022021021203. The next prime is 20022021021251. The reversal of 20022021021212 is 21212012022002.

It is a happy number.

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, 93710162 + ... + 93923577.

It is an arithmetic number, because the mean of its divisors is an integer number (865116630560).

Almost surely, 2^{20022021021212} is an apocalyptic number.

It is an amenable number.

20022021021212 is an abundant number, since it is smaller than the sum of its proper divisors (21503577245668).

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

20022021021212 is a wasteful number, since it uses less digits than its factorization.

20022021021212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187633890 (or 187633888 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 20022021021212 its reverse (21212012022002), we get a palindrome (41234033043214).

The spelling of 20022021021212 in words is "twenty trillion, twenty-two billion, twenty-one million, twenty-one thousand, two hundred twelve".