221211301030 has 16 divisors (see below), whose sum is σ = 398195771904. Its totient is φ = 88481091520.

The previous prime is 221211300997. The next prime is 221211301033. The reversal of 221211301030 is 30103112122.

221211301030 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 = 221211300995 and 221211301013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221211301033) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 148966 + ... + 681625.

It is an arithmetic number, because the mean of its divisors is an integer number (24887235744).

Almost surely, 2^221211301030 is an apocalyptic number.

221211301030 is a deficient number, since it is larger than the sum of its proper divisors (176984470874).

221211301030 is a wasteful number, since it uses less digits than its factorization.

221211301030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 857231.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 221211301030 its reverse (30103112122), we get a palindrome (251314413152).

The spelling of 221211301030 in words is "two hundred twenty-one billion, two hundred eleven million, three hundred one thousand, thirty".