402112213 has 4 divisors (see below), whose sum is σ = 410667840. Its totient is φ = 393556588.

The previous prime is 402112177. The next prime is 402112283. The reversal of 402112213 is 312211204.

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 402112213 - 2²¹ = 400015061 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402112283) 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, 4277743 + ... + 4277836.

It is an arithmetic number, because the mean of its divisors is an integer number (102666960).

Almost surely, 2^402112213 is an apocalyptic number.

It is an amenable number.

402112213 is a deficient number, since it is larger than the sum of its proper divisors (8555627).

402112213 is an equidigital number, since it uses as much as digits as its factorization.

402112213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8555626.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 402112213 is about 20052.7357983892. The cubic root of 402112213 is about 738.1009334805.

Adding to 402112213 its reverse (312211204), we get a palindrome (714323417).

It can be divided in two parts, 40211 and 2213, that added together give a palindrome (42424).

The spelling of 402112213 in words is "four hundred two million, one hundred twelve thousand, two hundred thirteen".