201221023030 has 16 divisors (see below), whose sum is σ = 371031935904. Its totient is φ = 78525277120.

The previous prime is 201221023027. The next prime is 201221023049. The reversal of 201221023030 is 30320122102.

201221023030 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 201221022995 and 201221023013.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 245391082 + ... + 245391901.

It is an arithmetic number, because the mean of its divisors is an integer number (23189495994).

Almost surely, 2^201221023030 is an apocalyptic number.

201221023030 is a deficient number, since it is larger than the sum of its proper divisors (169810912874).

201221023030 is a wasteful number, since it uses less digits than its factorization.

201221023030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 490783031.

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 201221023030 its reverse (30320122102), we get a palindrome (231541145132).

The spelling of 201221023030 in words is "two hundred one billion, two hundred twenty-one million, twenty-three thousand, thirty".