221311111030 has 16 divisors (see below), whose sum is σ = 401033559600. Its totient is φ = 87930320032.

The previous prime is 221311111003. The next prime is 221311111031. The reversal of 221311111030 is 30111113122.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 221311110995 and 221311111013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221311111031) 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, 74263984 + ... + 74266963.

It is an arithmetic number, because the mean of its divisors is an integer number (25064597475).

Almost surely, 2^221311111030 is an apocalyptic number.

221311111030 is a deficient number, since it is larger than the sum of its proper divisors (179722448570).

221311111030 is a wasteful number, since it uses less digits than its factorization.

221311111030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148531103.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 221311111030 its reverse (30111113122), we get a palindrome (251422224152).

The spelling of 221311111030 in words is "two hundred twenty-one billion, three hundred eleven million, one hundred eleven thousand, thirty".