212011222122220 has 12 divisors (see below), whose sum is σ = 445223566456704. Its totient is φ = 84804488848880.

The previous prime is 212011222122197. The next prime is 212011222122229. The reversal of 212011222122220 is 22221222110212.

It is a junction number, because it is equal to n+sod(n) for n = 212011222122191 and 212011222122200.

It is not an unprimeable number, because it can be changed into a prime (212011222122229) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5300280553036 + ... + 5300280553075.

It is an arithmetic number, because the mean of its divisors is an integer number (37101963871392).

Almost surely, 2^{212011222122220} is an apocalyptic number.

212011222122220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212011222122220 is an abundant number, since it is smaller than the sum of its proper divisors (233212344334484).

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

212011222122220 is a wasteful number, since it uses less digits than its factorization.

212011222122220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10600561106120 (or 10600561106118 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 22.

Adding to 212011222122220 its reverse (22221222110212), we get a palindrome (234232444232432).

The spelling of 212011222122220 in words is "two hundred twelve trillion, eleven billion, two hundred twenty-two million, one hundred twenty-two thousand, two hundred twenty".