221201020030 has 64 divisors (see below), whose sum is σ = 415016312256. Its totient is φ = 84813696000.

The previous prime is 221201020013. The next prime is 221201020043. The reversal of 221201020030 is 30020102122.

It is a super-2 number, since 2×221201020030² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 25330765 + ... + 25339495.

It is an arithmetic number, because the mean of its divisors is an integer number (6484629879).

Almost surely, 2^221201020030 is an apocalyptic number.

221201020030 is a deficient number, since it is larger than the sum of its proper divisors (193815292226).

221201020030 is a wasteful number, since it uses less digits than its factorization.

221201020030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9853.

The product of its (nonzero) digits is 48, while the sum is 13.

Adding to 221201020030 its reverse (30020102122), we get a palindrome (251221122152).

The spelling of 221201020030 in words is "two hundred twenty-one billion, two hundred one million, twenty thousand, thirty".