212222032220 has 48 divisors (see below), whose sum is σ = 486228451968. Its totient is φ = 77164176960.

The previous prime is 212222032213. The next prime is 212222032229. The reversal of 212222032220 is 22230222212.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 212222032192 and 212222032201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212222032229) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2561159 + ... + 2642721.

It is an arithmetic number, because the mean of its divisors is an integer number (10129759416).

Almost surely, 2^212222032220 is an apocalyptic number.

212222032220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212222032220 is an abundant number, since it is smaller than the sum of its proper divisors (274006419748).

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

212222032220 is a wasteful number, since it uses less digits than its factorization.

212222032220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93410 (or 93408 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

Adding to 212222032220 its reverse (22230222212), we get a palindrome (234452254432).

The spelling of 212222032220 in words is "two hundred twelve billion, two hundred twenty-two million, thirty-two thousand, two hundred twenty".