212210001220120 has 64 divisors (see below), whose sum is σ = 477640262016000. Its totient is φ = 84854179283328.

The previous prime is 212210001220099. The next prime is 212210001220127. The reversal of 212210001220120 is 21022100012212.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 212210001220094 and 212210001220103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212210001220127) 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, 5188107589 + ... + 5188148491.

It is an arithmetic number, because the mean of its divisors is an integer number (7463129094000).

Almost surely, 2^{212210001220120} is an apocalyptic number.

212210001220120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212210001220120 is an abundant number, since it is smaller than the sum of its proper divisors (265430260795880).

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

212210001220120 is a wasteful number, since it uses less digits than its factorization.

212210001220120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83312 (or 83308 counting only the distinct ones).

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

Adding to 212210001220120 its reverse (21022100012212), we get a palindrome (233232101232332).

The spelling of 212210001220120 in words is "two hundred twelve trillion, two hundred ten billion, one million, two hundred twenty thousand, one hundred twenty".