214221402 has 64 divisors (see below), whose sum is σ = 500117760. Its totient is φ = 67839552.

The previous prime is 214221401. The next prime is 214221419. The reversal of 214221402 is 204122412.

214221402 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (214221401) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 214368 + ... + 215364.

It is an arithmetic number, because the mean of its divisors is an integer number (7814340).

Almost surely, 2^214221402 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 214221402, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (250058880).

214221402 is an abundant number, since it is smaller than the sum of its proper divisors (285896358).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

214221402 is a wasteful number, since it uses less digits than its factorization.

214221402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1204 (or 1198 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 214221402 is about 14636.3042466328. The cubic root of 214221402 is about 598.3486090163.

Adding to 214221402 its reverse (204122412), we get a palindrome (418343814).

The spelling of 214221402 in words is "two hundred fourteen million, two hundred twenty-one thousand, four hundred two".