221201303310030 has 64 divisors (see below), whose sum is σ = 534517659168768. Its totient is φ = 58583533407360.

The previous prime is 221201303309989. The next prime is 221201303310059. The reversal of 221201303310030 is 30013303102122.

It is a junction number, because it is equal to n+sod(n) for n = 221201303309979 and 221201303310006.

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, 1180872 + ... + 21066491.

It is an arithmetic number, because the mean of its divisors is an integer number (8351838424512).

Almost surely, 2^{221201303310030} is an apocalyptic number.

221201303310030 is an abundant number, since it is smaller than the sum of its proper divisors (313316355858738).

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

221201303310030 is a wasteful number, since it uses less digits than its factorization.

221201303310030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22249641.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 221201303310030 its reverse (30013303102122), we get a palindrome (251214606412152).

The spelling of 221201303310030 in words is "two hundred twenty-one trillion, two hundred one billion, three hundred three million, three hundred ten thousand, thirty".