212022105 has 32 divisors (see below), whose sum is σ = 348364800. Its totient is φ = 110073792.

The previous prime is 212022091. The next prime is 212022143. The reversal of 212022105 is 501220212.

212022105 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 212022105 - 2¹⁹ = 211497817 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 93576 + ... + 95814.

It is an arithmetic number, because the mean of its divisors is an integer number (10886400).

Almost surely, 2^212022105 is an apocalyptic number.

It is an amenable number.

212022105 is a deficient number, since it is larger than the sum of its proper divisors (136342695).

212022105 is a wasteful number, since it uses less digits than its factorization.

212022105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2413.

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 212022105 is about 14560.9788475913. The cubic root of 212022105 is about 596.2939192978.

Adding to 212022105 its reverse (501220212), we get a palindrome (713242317).

The spelling of 212022105 in words is "two hundred twelve million, twenty-two thousand, one hundred five".