221212010200120 has 16 divisors (see below), whose sum is σ = 497727022950360. Its totient is φ = 88484804080032.

The previous prime is 221212010200039. The next prime is 221212010200121. The reversal of 221212010200120 is 21002010212122.

It is a happy number.

221212010200120 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 221212010200094 and 221212010200103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221212010200121) 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, 2765150127462 + ... + 2765150127541.

Almost surely, 2^{221212010200120} is an apocalyptic number.

221212010200120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221212010200120 is an abundant number, since it is smaller than the sum of its proper divisors (276515012750240).

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

221212010200120 is a wasteful number, since it uses less digits than its factorization.

221212010200120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5530300255014 (or 5530300255010 counting only the distinct ones).

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

Adding to 221212010200120 its reverse (21002010212122), we get a palindrome (242214020412242).

The spelling of 221212010200120 in words is "two hundred twenty-one trillion, two hundred twelve billion, ten million, two hundred thousand, one hundred twenty".