1231130010222 has 128 divisors (see below), whose sum is σ = 3341543777280. Its totient is φ = 327965967360.

The previous prime is 1231130010191. The next prime is 1231130010223. The reversal of 1231130010222 is 2220100311321.

1231130010222 is a `hidden beast` number, since 123 + 11 + 300 + 10 + 222 = 666.

It is a super-2 number, since 2×1231130010222² (a number of 25 digits) contains 22 as substring.

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 = 1231130010195 and 1231130010204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231130010223) 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, 207679 + ... + 1582842.

It is an arithmetic number, because the mean of its divisors is an integer number (26105810760).

Almost surely, 2^{1231130010222} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1231130010222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1670771888640).

1231130010222 is an abundant number, since it is smaller than the sum of its proper divisors (2110413767058).

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

1231130010222 is a wasteful number, since it uses less digits than its factorization.

1231130010222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1790663 (or 1790657 counting only the distinct ones).

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

Adding to 1231130010222 its reverse (2220100311321), we get a palindrome (3451230321543).

The spelling of 1231130010222 in words is "one trillion, two hundred thirty-one billion, one hundred thirty million, ten thousand, two hundred twenty-two".