1212210121222 has 16 divisors (see below), whose sum is σ = 1849318393680. Its totient is φ = 595772704672.

The previous prime is 1212210121183. The next prime is 1212210121267. The reversal of 1212210121222 is 2221210122121.

It is a self number, because there is not a number n which added to its sum of digits gives 1212210121222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 688788 + ... + 1702600.

It is an arithmetic number, because the mean of its divisors is an integer number (115582399605).

Almost surely, 2^{1212210121222} is an apocalyptic number.

1212210121222 is a deficient number, since it is larger than the sum of its proper divisors (637108272458).

1212210121222 is a wasteful number, since it uses less digits than its factorization.

1212210121222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1024007.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 1212210121222 its reverse (2221210122121), we get a palindrome (3433420243343).

The spelling of 1212210121222 in words is "one trillion, two hundred twelve billion, two hundred ten million, one hundred twenty-one thousand, two hundred twenty-two".