12220032212 has 6 divisors (see below), whose sum is σ = 21385056378. Its totient is φ = 6110016104.

The previous prime is 12220032199. The next prime is 12220032257. The reversal of 12220032212 is 21223002221.

It can be written as a sum of positive squares in only one way, i.e., 7623734596 + 4596297616 = 87314^2 + 67796^2 .

It is a super-2 number, since 2×12220032212² (a number of 21 digits) contains 22 as substring.

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, 1527504023 + ... + 1527504030.

It is an arithmetic number, because the mean of its divisors is an integer number (3564176063).

Almost surely, 2^12220032212 is an apocalyptic number.

It is an amenable number.

12220032212 is a deficient number, since it is larger than the sum of its proper divisors (9165024166).

12220032212 is a wasteful number, since it uses less digits than its factorization.

12220032212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3055008057 (or 3055008055 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 12220032212 its reverse (21223002221), we get a palindrome (33443034433).

The spelling of 12220032212 in words is "twelve billion, two hundred twenty million, thirty-two thousand, two hundred twelve".