212210012100220 has 12 divisors (see below), whose sum is σ = 445641025410504. Its totient is φ = 84884004840080.

The previous prime is 212210012100211. The next prime is 212210012100223. The reversal of 212210012100220 is 22001210012212.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 212210012100194 and 212210012100203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212210012100223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5305250302486 + ... + 5305250302525.

It is an arithmetic number, because the mean of its divisors is an integer number (37136752117542).

Almost surely, 2^{212210012100220} is an apocalyptic number.

212210012100220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212210012100220 is an abundant number, since it is smaller than the sum of its proper divisors (233431013310284).

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

212210012100220 is a wasteful number, since it uses less digits than its factorization.

212210012100220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10610500605020 (or 10610500605018 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 212210012100220 its reverse (22001210012212), we get a palindrome (234211222112432).

The spelling of 212210012100220 in words is "two hundred twelve trillion, two hundred ten billion, twelve million, one hundred thousand, two hundred twenty".