1213213100344 has 32 divisors (see below), whose sum is σ = 2623593218400. Its totient is φ = 515178299520.

The previous prime is 1213213100263. The next prime is 1213213100423. The reversal of 1213213100344 is 4430013123121.

It is a super-2 number, since 2×1213213100344² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 99372427 + ... + 99384634.

It is an arithmetic number, because the mean of its divisors is an integer number (81987288075).

Almost surely, 2^{1213213100344} is an apocalyptic number.

1213213100344 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1213213100344 is an abundant number, since it is smaller than the sum of its proper divisors (1410380118056).

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

1213213100344 is a wasteful number, since it uses less digits than its factorization.

1213213100344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198757183 (or 198757179 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 1213213100344 its reverse (4430013123121), we get a palindrome (5643226223465).

The spelling of 1213213100344 in words is "one trillion, two hundred thirteen billion, two hundred thirteen million, one hundred thousand, three hundred forty-four".