221212100030130 has 96 divisors (see below), whose sum is σ = 627500113531200. Its totient is φ = 53621863194240.

The previous prime is 221212100030113. The next prime is 221212100030179. The reversal of 221212100030130 is 31030001212122.

221212100030130 is a `hidden beast` number, since 2 + 2 + 121 + 210 + 0 + 0 + 301 + 30 = 666.

It is a super-2 number, since 2×221212100030130² (a number of 29 digits) contains 22 as substring.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1064797 + ... + 21060816.

It is an arithmetic number, because the mean of its divisors is an integer number (6536459515950).

Almost surely, 2^{221212100030130} is an apocalyptic number.

221212100030130 is an abundant number, since it is smaller than the sum of its proper divisors (406288013501070).

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

221212100030130 is a wasteful number, since it uses less digits than its factorization.

221212100030130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22135736 (or 22135733 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 221212100030130 its reverse (31030001212122), we get a palindrome (252242101242252).

The spelling of 221212100030130 in words is "two hundred twenty-one trillion, two hundred twelve billion, one hundred million, thirty thousand, one hundred thirty".