402221013 has 8 divisors (see below), whose sum is σ = 564520800. Its totient is φ = 254034288.

The previous prime is 402220997. The next prime is 402221041. The reversal of 402221013 is 310122204.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 402221013 - 2⁴ = 402220997 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 402220983 and 402221001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402221093) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3528198 + ... + 3528311.

It is an arithmetic number, because the mean of its divisors is an integer number (70565100).

Almost surely, 2^402221013 is an apocalyptic number.

It is an amenable number.

402221013 is a deficient number, since it is larger than the sum of its proper divisors (162299787).

402221013 is a wasteful number, since it uses less digits than its factorization.

402221013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7056531.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 402221013 is about 20055.4484617024. The cubic root of 402221013 is about 738.1674971057.

Adding to 402221013 its reverse (310122204), we get a palindrome (712343217).

The spelling of 402221013 in words is "four hundred two million, two hundred twenty-one thousand, thirteen".