221122012121211 has 8 divisors (see below), whose sum is σ = 295082857108800. Its totient is φ = 147287920940552.

The previous prime is 221122012121203. The next prime is 221122012121237. The reversal of 221122012121211 is 112121210221122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 221122012121211 - 2³ = 221122012121203 is a prime.

It is a super-2 number, since 2×221122012121211² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (221122012121111) 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, 31688447661 + ... + 31688454638.

It is an arithmetic number, because the mean of its divisors is an integer number (36885357138600).

Almost surely, 2^{221122012121211} is an apocalyptic number.

221122012121211 is a deficient number, since it is larger than the sum of its proper divisors (73960844987589).

221122012121211 is a wasteful number, since it uses less digits than its factorization.

221122012121211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63376903465.

The product of its (nonzero) digits is 128, while the sum is 21.

Adding to 221122012121211 its reverse (112121210221122), we get a palindrome (333243222342333).

The spelling of 221122012121211 in words is "two hundred twenty-one trillion, one hundred twenty-two billion, twelve million, one hundred twenty-one thousand, two hundred eleven".