21212310130330 has 128 divisors (see below), whose sum is σ = 42584312217600. Its totient is φ = 7542193002240.

The previous prime is 21212310130321. The next prime is 21212310130369. The reversal of 21212310130330 is 3303101321212.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2119742187 + ... + 2119752193.

It is an arithmetic number, because the mean of its divisors is an integer number (332689939200).

Almost surely, 2^{21212310130330} is an apocalyptic number.

21212310130330 is an abundant number, since it is smaller than the sum of its proper divisors (21372002087270).

21212310130330 is a wasteful number, since it uses less digits than its factorization.

21212310130330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11284.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 21212310130330 its reverse (3303101321212), we get a palindrome (24515411451542).

The spelling of 21212310130330 in words is "twenty-one trillion, two hundred twelve billion, three hundred ten million, one hundred thirty thousand, three hundred thirty".