212122041 has 4 divisors (see below), whose sum is σ = 282829392. Its totient is φ = 141414692.

The previous prime is 212122019. The next prime is 212122049. The reversal of 212122041 is 140221212.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 212122041 - 2¹⁴ = 212105657 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 212122041.

It is not an unprimeable number, because it can be changed into a prime (212122049) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35353671 + ... + 35353676.

It is an arithmetic number, because the mean of its divisors is an integer number (70707348).

Almost surely, 2^212122041 is an apocalyptic number.

It is an amenable number.

212122041 is a deficient number, since it is larger than the sum of its proper divisors (70707351).

212122041 is an equidigital number, since it uses as much as digits as its factorization.

212122041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70707350.

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 212122041 is about 14564.4100807413. The cubic root of 212122041 is about 596.3875917144.

Adding to 212122041 its reverse (140221212), we get a palindrome (352343253).

The spelling of 212122041 in words is "two hundred twelve million, one hundred twenty-two thousand, forty-one".