202122220021212 has 96 divisors (see below), whose sum is σ = 486394260206400. Its totient is φ = 65278984458240.

The previous prime is 202122220021207. The next prime is 202122220021229. The reversal of 202122220021212 is 212120022221202.

202122220021212 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 122021914 + ... + 123667262.

It is an arithmetic number, because the mean of its divisors is an integer number (5066606877150).

Almost surely, 2^{202122220021212} is an apocalyptic number.

It is an amenable number.

202122220021212 is an abundant number, since it is smaller than the sum of its proper divisors (284272040185188).

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

202122220021212 is a wasteful number, since it uses less digits than its factorization.

202122220021212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1646551 (or 1646549 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 202122220021212 its reverse (212120022221202), we get a palindrome (414242242242414).

The spelling of 202122220021212 in words is "two hundred two trillion, one hundred twenty-two billion, two hundred twenty million, twenty-one thousand, two hundred twelve".