1212202212212 has 6 divisors (see below), whose sum is σ = 2121353871378. Its totient is φ = 606101106104.

The previous prime is 1212202212139. The next prime is 1212202212229. The reversal of 1212202212212 is 2122122022121.

It can be written as a sum of positive squares in only one way, i.e., 1188631979536 + 23570232676 = 1090244^2 + 153526^2 .

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, 151525276523 + ... + 151525276530.

It is an arithmetic number, because the mean of its divisors is an integer number (353558978563).

Almost surely, 2^{1212202212212} is an apocalyptic number.

It is an amenable number.

1212202212212 is a deficient number, since it is larger than the sum of its proper divisors (909151659166).

1212202212212 is a wasteful number, since it uses less digits than its factorization.

1212202212212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303050553057 (or 303050553055 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 1212202212212 its reverse (2122122022121), we get a palindrome (3334324234333).

The spelling of 1212202212212 in words is "one trillion, two hundred twelve billion, two hundred two million, two hundred twelve thousand, two hundred twelve".