12221212001222 has 32 divisors (see below), whose sum is σ = 21310298069760. Its totient is φ = 5148496216800.

The previous prime is 12221212001179. The next prime is 12221212001269. The reversal of 12221212001222 is 22210021212221.

It is a junction number, because it is equal to n+sod(n) for n = 12221212001194 and 12221212001203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30893408 + ... + 31286499.

It is an arithmetic number, because the mean of its divisors is an integer number (665946814680).

Almost surely, 2^{12221212001222} is an apocalyptic number.

12221212001222 is a deficient number, since it is larger than the sum of its proper divisors (9089086068538).

12221212001222 is a wasteful number, since it uses less digits than its factorization.

12221212001222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62180156.

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

Adding to 12221212001222 its reverse (22210021212221), we get a palindrome (34431233213443).

The spelling of 12221212001222 in words is "twelve trillion, two hundred twenty-one billion, two hundred twelve million, one thousand, two hundred twenty-two".