212000022 has 36 divisors (see below), whose sum is σ = 497391804. Its totient is φ = 65229840.

The previous prime is 212000021. The next prime is 212000029. The reversal of 212000022 is 220000212.

212000022 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 211999968 and 212000013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212000021) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 31804 + ... + 37887.

It is an arithmetic number, because the mean of its divisors is an integer number (13816439).

Almost surely, 2^212000022 is an apocalyptic number.

212000022 is an abundant number, since it is smaller than the sum of its proper divisors (285391782).

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

212000022 is a wasteful number, since it uses less digits than its factorization.

212000022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69725 (or 69709 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 9.

The square root of 212000022 is about 14560.2205340441. The cubic root of 212000022 is about 596.2732164002.

Adding to 212000022 its reverse (220000212), we get a palindrome (432000234).

The spelling of 212000022 in words is "two hundred twelve million, twenty-two", and thus it is an aban number.