223211212020 has 144 divisors (see below), whose sum is σ = 704177160960. Its totient is φ = 57181033728.

The previous prime is 223211212001. The next prime is 223211212043. The reversal of 223211212020 is 20212112322.

223211212020 is a `hidden beast` number, since 22 + 321 + 121 + 202 + 0 = 666.

It is a super-3 number, since 3×223211212020³ (a number of 35 digits) contains 333 as substring.

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 = 223211211984 and 223211212002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 314019 + ... + 738261.

Almost surely, 2^223211212020 is an apocalyptic number.

223211212020 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 223211212020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (352088580480).

223211212020 is an abundant number, since it is smaller than the sum of its proper divisors (480965948940).

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

223211212020 is a wasteful number, since it uses less digits than its factorization.

223211212020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 424374 (or 424369 counting only the distinct ones).

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

Adding to 223211212020 its reverse (20212112322), we get a palindrome (243423324342).

The spelling of 223211212020 in words is "two hundred twenty-three billion, two hundred eleven million, two hundred twelve thousand, twenty".