402111213 has 16 divisors (see below), whose sum is σ = 614252160. Its totient is φ = 229211136.

The previous prime is 402111209. The next prime is 402111221. The reversal of 402111213 is 312111204.

It is not a de Polignac number, because 402111213 - 2² = 402111209 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 402111192 and 402111201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402111223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14820 + ... + 31997.

It is an arithmetic number, because the mean of its divisors is an integer number (38390760).

Almost surely, 2^402111213 is an apocalyptic number.

It is an amenable number.

402111213 is a deficient number, since it is larger than the sum of its proper divisors (212140947).

402111213 is a wasteful number, since it uses less digits than its factorization.

402111213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47236.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 402111213 is about 20052.7108641201. The cubic root of 402111213 is about 738.1003216268.

Adding to 402111213 its reverse (312111204), we get a palindrome (714222417).

Subtracting from 402111213 its reverse (312111204), we obtain a palindrome (90000009).

The spelling of 402111213 in words is "four hundred two million, one hundred eleven thousand, two hundred thirteen".