212144022 has 20 divisors (see below), whose sum is σ = 475360116. Its totient is φ = 70714620.

The previous prime is 212144017. The next prime is 212144027. The reversal of 212144022 is 220441212.

212144022 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (212144017) and next prime (212144027).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 212143986 and 212144004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212144027) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 654604 + ... + 654927.

Almost surely, 2^212144022 is an apocalyptic number.

212144022 is an abundant number, since it is smaller than the sum of its proper divisors (263216094).

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

212144022 is a wasteful number, since it uses less digits than its factorization.

212144022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1309545 (or 1309536 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 212144022 is about 14565.1646746613. The cubic root of 212144022 is about 596.4081910870.

Adding to 212144022 its reverse (220441212), we get a palindrome (432585234).

The spelling of 212144022 in words is "two hundred twelve million, one hundred forty-four thousand, twenty-two".