402212011 has 4 divisors (see below), whose sum is σ = 415186624. Its totient is φ = 389237400.

The previous prime is 402212003. The next prime is 402212021. The reversal of 402212011 is 110212204.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 402212011 - 2³ = 402212003 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 402211982 and 402212000.

It is not an unprimeable number, because it can be changed into a prime (402212021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6487260 + ... + 6487321.

It is an arithmetic number, because the mean of its divisors is an integer number (103796656).

Almost surely, 2^402212011 is an apocalyptic number.

402212011 is a deficient number, since it is larger than the sum of its proper divisors (12974613).

402212011 is a wasteful number, since it uses less digits than its factorization.

402212011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12974612.

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 402212011 is about 20055.2240326554. The cubic root of 402212011 is about 738.1619901554.

Adding to 402212011 its reverse (110212204), we get a palindrome (512424215).

The spelling of 402212011 in words is "four hundred two million, two hundred twelve thousand, eleven".