221002030 has 8 divisors (see below), whose sum is σ = 397803672. Its totient is φ = 88400808.

The previous prime is 221002021. The next prime is 221002031. The reversal of 221002030 is 30200122.

221002030 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a super-3 number, since 3×221002030³ (a number of 26 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (10), and also a Moran number because the ratio is a prime number: 22100203 = 221002030 / (2 + 2 + 1 + 0 + 0 + 2 + 0 + 3 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 221001998 and 221002016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221002031) 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, 11050092 + ... + 11050111.

It is an arithmetic number, because the mean of its divisors is an integer number (49725459).

Almost surely, 2^221002030 is an apocalyptic number.

221002030 is a deficient number, since it is larger than the sum of its proper divisors (176801642).

221002030 is a wasteful number, since it uses less digits than its factorization.

221002030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22100210.

The product of its (nonzero) digits is 24, while the sum is 10.

The square root of 221002030 is about 14866.1370234503. The cubic root of 221002030 is about 604.5962107669.

Adding to 221002030 its reverse (30200122), we get a palindrome (251202152).

The spelling of 221002030 in words is "two hundred twenty-one million, two thousand, thirty".