20231222212 has 12 divisors (see below), whose sum is σ = 35405684860. Its totient is φ = 10115312256.

The previous prime is 20231222203. The next prime is 20231222269. The reversal of 20231222212 is 21222213202.

It can be written as a sum of positive squares in 2 ways, for example, as 8176499776 + 12054722436 = 90424^2 + 109794^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20231222212.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 158464 + ... + 256072.

Almost surely, 2^20231222212 is an apocalyptic number.

It is an amenable number.

20231222212 is a deficient number, since it is larger than the sum of its proper divisors (15174462648).

20231222212 is a wasteful number, since it uses less digits than its factorization.

20231222212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149430 (or 149428 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 20231222212 its reverse (21222213202), we get a palindrome (41453435414).

The spelling of 20231222212 in words is "twenty billion, two hundred thirty-one million, two hundred twenty-two thousand, two hundred twelve".