212402411 has 6 divisors (see below), whose sum is σ = 229998060. Its totient is φ = 196063608.

The previous prime is 212402381. The next prime is 212402417. The reversal of 212402411 is 114204212.

It is a de Polignac number, because none of the positive numbers 2^k-212402411 is a prime.

It is a super-2 number, since 2×212402411² = 90229568397225842, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 212402411.

It is not an unprimeable number, because it can be changed into a prime (212402417) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 628241 + ... + 628578.

It is an arithmetic number, because the mean of its divisors is an integer number (38333010).

Almost surely, 2^212402411 is an apocalyptic number.

212402411 is a deficient number, since it is larger than the sum of its proper divisors (17595649).

212402411 is a wasteful number, since it uses less digits than its factorization.

212402411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1256845 (or 1256832 counting only the distinct ones).

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

The square root of 212402411 is about 14574.0320776373. The cubic root of 212402411 is about 596.6502323047.

Adding to 212402411 its reverse (114204212), we get a palindrome (326606623).

The spelling of 212402411 in words is "two hundred twelve million, four hundred two thousand, four hundred eleven".