221213342130 has 128 divisors (see below), whose sum is σ = 586148659200. Its totient is φ = 52982899200.

The previous prime is 221213342123. The next prime is 221213342173. The reversal of 221213342130 is 31243312122.

It is a self number, because there is not a number n which added to its sum of digits gives 221213342130.

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, 53186991 + ... + 53191149.

It is an arithmetic number, because the mean of its divisors is an integer number (4579286400).

Almost surely, 2^221213342130 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 221213342130, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (293074329600).

221213342130 is an abundant number, since it is smaller than the sum of its proper divisors (364935317070).

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

221213342130 is a wasteful number, since it uses less digits than its factorization.

221213342130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6080.

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 221213342130 its reverse (31243312122), we get a palindrome (252456654252).

The spelling of 221213342130 in words is "two hundred twenty-one billion, two hundred thirteen million, three hundred forty-two thousand, one hundred thirty".