211221102211122 has 32 divisors (see below), whose sum is σ = 423399293171712. Its totient is φ = 70247521904144.

The previous prime is 211221102211103. The next prime is 211221102211241. The reversal of 211221102211122 is 221112201122112.

It is a super-2 number, since 2×211221102211122² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 426007723 + ... + 426503249.

It is an arithmetic number, because the mean of its divisors is an integer number (13231227911616).

Almost surely, 2^{211221102211122} is an apocalyptic number.

211221102211122 is an abundant number, since it is smaller than the sum of its proper divisors (212178190960590).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

211221102211122 is a wasteful number, since it uses less digits than its factorization.

211221102211122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 656342.

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

Adding to 211221102211122 its reverse (221112201122112), we get a palindrome (432333303333234).

The spelling of 211221102211122 in words is "two hundred eleven trillion, two hundred twenty-one billion, one hundred two million, two hundred eleven thousand, one hundred twenty-two".