223210111212 has 96 divisors (see below), whose sum is σ = 658749288960. Its totient is φ = 64698575040.

The previous prime is 223210111171. The next prime is 223210111219. The reversal of 223210111212 is 212111012322.

223210111212 is a `hidden beast` number, since 22 + 321 + 0 + 111 + 212 = 666.

It is a super-3 number, since 3×223210111212³ (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 not an unprimeable number, because it can be changed into a prime (223210111219) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4057183 + ... + 4111830.

It is an arithmetic number, because the mean of its divisors is an integer number (6861971760).

Almost surely, 2^223210111212 is an apocalyptic number.

223210111212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

223210111212 is an abundant number, since it is smaller than the sum of its proper divisors (435539177748).

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

223210111212 is a wasteful number, since it uses less digits than its factorization.

223210111212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8169060 (or 8169052 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 223210111212 its reverse (212111012322), we get a palindrome (435321123534).

The spelling of 223210111212 in words is "two hundred twenty-three billion, two hundred ten million, one hundred eleven thousand, two hundred twelve".