221310111210030 has 24 divisors (see below), whose sum is σ = 575406289146312. Its totient is φ = 59016029655984.

The previous prime is 221310111210029. The next prime is 221310111210037. The reversal of 221310111210030 is 30012111013122.

221310111210030 is a `hidden beast` number, since 2 + 2 + 1 + 310 + 111 + 210 + 0 + 30 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 221310111209985 and 221310111210012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221310111210037) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1229500617744 + ... + 1229500617923.

It is an arithmetic number, because the mean of its divisors is an integer number (23975262047763).

Almost surely, 2^{221310111210030} is an apocalyptic number.

221310111210030 is an abundant number, since it is smaller than the sum of its proper divisors (354096177936282).

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

221310111210030 is a wasteful number, since it uses less digits than its factorization.

221310111210030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2459001235680 (or 2459001235677 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 221310111210030 its reverse (30012111013122), we get a palindrome (251322222223152).

The spelling of 221310111210030 in words is "two hundred twenty-one trillion, three hundred ten billion, one hundred eleven million, two hundred ten thousand, thirty".