213212213100220 has 24 divisors (see below), whose sum is σ = 447951129771600. Its totient is φ = 85245745761792.

The previous prime is 213212213100191. The next prime is 213212213100221. The reversal of 213212213100220 is 22001312212312.

It is a junction number, because it is equal to n+sod(n) for n = 213212213100191 and 213212213100200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213212213100221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2446172725 + ... + 2446259884.

It is an arithmetic number, because the mean of its divisors is an integer number (18664630407150).

Almost surely, 2^{213212213100220} is an apocalyptic number.

213212213100220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213212213100220 is an abundant number, since it is smaller than the sum of its proper divisors (234738916671380).

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

213212213100220 is a wasteful number, since it uses less digits than its factorization.

213212213100220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4892434797 (or 4892434795 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 213212213100220 its reverse (22001312212312), we get a palindrome (235213525312532).

The spelling of 213212213100220 in words is "two hundred thirteen trillion, two hundred twelve billion, two hundred thirteen million, one hundred thousand, two hundred twenty".