23220212 has 6 divisors (see below), whose sum is σ = 40635378. Its totient is φ = 11610104.

The previous prime is 23220187. The next prime is 23220221. The reversal of 23220212 is 21202232.

It can be written as a sum of positive squares in only one way, i.e., 20830096 + 2390116 = 4564^2 + 1546^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2902523 + ... + 2902530.

It is an arithmetic number, because the mean of its divisors is an integer number (6772563).

Almost surely, 2^23220212 is an apocalyptic number.

It is an amenable number.

23220212 is a deficient number, since it is larger than the sum of its proper divisors (17415166).

23220212 is a wasteful number, since it uses less digits than its factorization.

23220212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5805057 (or 5805055 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 23220212 is about 4818.7355187850. The cubic root of 23220212 is about 285.2914306291.

Adding to 23220212 its reverse (21202232), we get a palindrome (44422444).

It can be divided in two parts, 23220 and 212, that added together give a palindrome (23432).

The spelling of 23220212 in words is "twenty-three million, two hundred twenty thousand, two hundred twelve".