213311123321220 has 192 divisors, whose sum is σ = 698616503907840. Its totient is φ = 53928290820096.

The previous prime is 213311123321173. The next prime is 213311123321323. The reversal of 213311123321220 is 22123321113312.

213311123321220 is a `hidden beast` number, since 2 + 1 + 3 + 3 + 1 + 112 + 3 + 321 + 220 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 74591269 + ... + 77398188.

It is an arithmetic number, because the mean of its divisors is an integer number (3638627624520).

Almost surely, 2^{213311123321220} is an apocalyptic number.

213311123321220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213311123321220 is an abundant number, since it is smaller than the sum of its proper divisors (485305380586620).

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

213311123321220 is a wasteful number, since it uses less digits than its factorization.

213311123321220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151989611 (or 151989603 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

Adding to 213311123321220 its reverse (22123321113312), we get a palindrome (235434444434532).

The spelling of 213311123321220 in words is "two hundred thirteen trillion, three hundred eleven billion, one hundred twenty-three million, three hundred twenty-one thousand, two hundred twenty".