1213100221230 has 24 divisors (see below), whose sum is σ = 3154060575432. Its totient is φ = 323493392304.

The previous prime is 1213100221183. The next prime is 1213100221243. The reversal of 1213100221230 is 321220013121.

1213100221230 is a `hidden beast` number, since 1 + 213 + 1 + 0 + 0 + 221 + 230 = 666.

It is a super-2 number, since 2×1213100221230² (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 congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6739445584 + ... + 6739445763.

It is an arithmetic number, because the mean of its divisors is an integer number (131419190643).

Almost surely, 2^{1213100221230} is an apocalyptic number.

1213100221230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1213100221230 is an abundant number, since it is smaller than the sum of its proper divisors (1940960354202).

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

1213100221230 is a wasteful number, since it uses less digits than its factorization.

1213100221230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13478891360 (or 13478891357 counting only the distinct ones).

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

Adding to 1213100221230 its reverse (321220013121), we get a palindrome (1534320234351).

The spelling of 1213100221230 in words is "one trillion, two hundred thirteen billion, one hundred million, two hundred twenty-one thousand, two hundred thirty".