221202030 has 64 divisors (see below), whose sum is σ = 607938048. Its totient is φ = 50459520.

The previous prime is 221202029. The next prime is 221202031. The reversal of 221202030 is 30202122.

It is an interprime number because it is at equal distance from previous prime (221202029) and next prime (221202031).

It is a super-3 number, since 3×221202030³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 221201997 and 221202015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221202031) 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, 171769 + ... + 173051.

It is an arithmetic number, because the mean of its divisors is an integer number (9499032).

Almost surely, 2^221202030 is an apocalyptic number.

221202030 is an abundant number, since it is smaller than the sum of its proper divisors (386736018).

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

221202030 is a wasteful number, since it uses less digits than its factorization.

221202030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2121.

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 221202030 is about 14872.8621993213. The cubic root of 221202030 is about 604.7785360671.

Adding to 221202030 its reverse (30202122), we get a palindrome (251404152).

The spelling of 221202030 in words is "two hundred twenty-one million, two hundred two thousand, thirty".