212421122 has 8 divisors (see below), whose sum is σ = 324032400. Its totient is φ = 104410324.

The previous prime is 212421119. The next prime is 212421149. The reversal of 212421122 is 221124212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 212421122.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 899972 + ... + 900207.

It is an arithmetic number, because the mean of its divisors is an integer number (40504050).

Almost surely, 2^212421122 is an apocalyptic number.

212421122 is a deficient number, since it is larger than the sum of its proper divisors (111611278).

212421122 is a wasteful number, since it uses less digits than its factorization.

212421122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1800240.

The product of its digits is 128, while the sum is 17.

The square root of 212421122 is about 14574.6739929235. The cubic root of 212421122 is about 596.6677518715.

Adding to 212421122 its reverse (221124212), we get a palindrome (433545334).

The spelling of 212421122 in words is "two hundred twelve million, four hundred twenty-one thousand, one hundred twenty-two".