212020120 has 64 divisors (see below), whose sum is σ = 515924640. Its totient is φ = 77952000.

The previous prime is 212020111. The next prime is 212020139. The reversal of 212020120 is 21020212.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 212020097 and 212020106.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 145395 + ... + 146845.

Almost surely, 2^212020120 is an apocalyptic number.

212020120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 212020120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (257962320).

212020120 is an abundant number, since it is smaller than the sum of its proper divisors (303904520).

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

212020120 is a wasteful number, since it uses less digits than its factorization.

212020120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1756 (or 1752 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 212020120 is about 14560.9106858053. The cubic root of 212020120 is about 596.2920584115.

Adding to 212020120 its reverse (21020212), we get a palindrome (233040332).

The spelling of 212020120 in words is "two hundred twelve million, twenty thousand, one hundred twenty".