212022020 has 96 divisors (see below), whose sum is σ = 536524800. Its totient is φ = 70277760.

The previous prime is 212021993. The next prime is 212022023. The reversal of 212022020 is 20220212.

It is a nialpdrome in base 11.

It is a junction number, because it is equal to n+sod(n) for n = 212021992 and 212022010.

It is not an unprimeable number, because it can be changed into a prime (212022023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 212162 + ... + 213158.

It is an arithmetic number, because the mean of its divisors is an integer number (5588800).

Almost surely, 2^212022020 is an apocalyptic number.

212022020 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 212022020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (268262400).

212022020 is an abundant number, since it is smaller than the sum of its proper divisors (324502780).

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

212022020 is a wasteful number, since it uses less digits than its factorization.

212022020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1058 (or 1042 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 11.

The square root of 212022020 is about 14560.9759288311. The cubic root of 212022020 is about 596.2938396127.

Adding to 212022020 its reverse (20220212), we get a palindrome (232242232).

The spelling of 212022020 in words is "two hundred twelve million, twenty-two thousand, twenty".