1212012022222 has 16 divisors (see below), whose sum is σ = 1850970137040. Its totient is φ = 595094478912.

The previous prime is 1212012022213. The next prime is 1212012022223. The reversal of 1212012022222 is 2222202102121.

It is a self number, because there is not a number n which added to its sum of digits gives 1212012022222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212012022223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18092008 + ... + 18158875.

It is an arithmetic number, because the mean of its divisors is an integer number (115685633565).

Almost surely, 2^{1212012022222} is an apocalyptic number.

1212012022222 is a deficient number, since it is larger than the sum of its proper divisors (638958114818).

1212012022222 is a wasteful number, since it uses less digits than its factorization.

1212012022222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36251187.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 1212012022222 its reverse (2222202102121), we get a palindrome (3434214124343).

The spelling of 1212012022222 in words is "one trillion, two hundred twelve billion, twelve million, twenty-two thousand, two hundred twenty-two".