213112022220 has 240 divisors, whose sum is σ = 685657260288. Its totient is φ = 55380931200.

The previous prime is 213112022183. The next prime is 213112022239. The reversal of 213112022220 is 22220211312.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 213112022193 and 213112022202.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 32527945 + ... + 32534495.

Almost surely, 2^213112022220 is an apocalyptic number.

213112022220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 213112022220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (342828630144).

213112022220 is an abundant number, since it is smaller than the sum of its proper divisors (472545238068).

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

213112022220 is a wasteful number, since it uses less digits than its factorization.

213112022220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7082 (or 7071 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 213112022220 its reverse (22220211312), we get a palindrome (235332233532).

The spelling of 213112022220 in words is "two hundred thirteen billion, one hundred twelve million, twenty-two thousand, two hundred twenty".