213143411111220 has 72 divisors (see below), whose sum is σ = 647169494156640. Its totient is φ = 56782464461760.

The previous prime is 213143411111201. The next prime is 213143411111237. The reversal of 213143411111220 is 22111114341312.

213143411111220 is a `hidden beast` number, since 2 + 1 + 3 + 1 + 434 + 1 + 1 + 1 + 1 + 1 + 220 = 666.

It is a super-2 number, since 2×213143411111220² (a number of 29 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 23 ways as a sum of consecutive naturals, for example, 580842126 + ... + 581208965.

It is an arithmetic number, because the mean of its divisors is an integer number (8988465196620).

Almost surely, 2^{213143411111220} is an apocalyptic number.

213143411111220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213143411111220 is an abundant number, since it is smaller than the sum of its proper divisors (434026083045420).

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

213143411111220 is a wasteful number, since it uses less digits than its factorization.

213143411111220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1162052125 (or 1162052120 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

Adding to 213143411111220 its reverse (22111114341312), we get a palindrome (235254525452532).

The spelling of 213143411111220 in words is "two hundred thirteen trillion, one hundred forty-three billion, four hundred eleven million, one hundred eleven thousand, two hundred twenty".