212220220021222 has 32 divisors (see below), whose sum is σ = 369241801558272. Its totient is φ = 89592637758624.

The previous prime is 212220220021207. The next prime is 212220220021223. The reversal of 212220220021222 is 222120022022212.

It is a super-4 number, since 4×212220220021222⁴ (a number of 58 digits) contains 4444 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 212220220021193 and 212220220021202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212220220021223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59435113 + ... + 62904475.

It is an arithmetic number, because the mean of its divisors is an integer number (11538806298696).

Almost surely, 2^{212220220021222} is an apocalyptic number.

212220220021222 is a deficient number, since it is larger than the sum of its proper divisors (157021581537050).

212220220021222 is a wasteful number, since it uses less digits than its factorization.

212220220021222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3534652.

The product of its (nonzero) digits is 1024, while the sum is 22.

Adding to 212220220021222 its reverse (222120022022212), we get a palindrome (434340242043434).

The spelling of 212220220021222 in words is "two hundred twelve trillion, two hundred twenty billion, two hundred twenty million, twenty-one thousand, two hundred twenty-two".