221311121343130 has 128 divisors (see below), whose sum is σ = 491298441984000. Its totient is φ = 69897274216704.

The previous prime is 221311121343107. The next prime is 221311121343133. The reversal of 221311121343130 is 31343121113122.

It is a happy number.

It is a super-2 number, since 2×221311121343130² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (221311121343133) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1055874681 + ... + 1056084259.

It is an arithmetic number, because the mean of its divisors is an integer number (3838269078000).

Almost surely, 2^{221311121343130} is an apocalyptic number.

221311121343130 is an abundant number, since it is smaller than the sum of its proper divisors (269987320640870).

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

221311121343130 is a wasteful number, since it uses less digits than its factorization.

221311121343130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211988.

The product of its (nonzero) digits is 2592, while the sum is 28.

Adding to 221311121343130 its reverse (31343121113122), we get a palindrome (252654242456252).

The spelling of 221311121343130 in words is "two hundred twenty-one trillion, three hundred eleven billion, one hundred twenty-one million, three hundred forty-three thousand, one hundred thirty".