221122112012212 has 12 divisors (see below), whose sum is σ = 387214482614176. Its totient is φ = 110489402693880.

The previous prime is 221122112012203. The next prime is 221122112012287. The reversal of 221122112012212 is 212210211221122.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17913321114 + ... + 17913333457.

Almost surely, 2^{221122112012212} is an apocalyptic number.

It is an amenable number.

221122112012212 is a deficient number, since it is larger than the sum of its proper divisors (166092370601964).

221122112012212 is a wasteful number, since it uses less digits than its factorization.

221122112012212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35826656118 (or 35826656116 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 22.

Adding to 221122112012212 its reverse (212210211221122), we get a palindrome (433332323233334).

The spelling of 221122112012212 in words is "two hundred twenty-one trillion, one hundred twenty-two billion, one hundred twelve million, twelve thousand, two hundred twelve".