212211222110121 has 32 divisors (see below), whose sum is σ = 306067809398400. Its totient is φ = 130011169065984.

The previous prime is 212211222110053. The next prime is 212211222110131. The reversal of 212211222110121 is 121011222112212.

It is not a de Polignac number, because 212211222110121 - 2⁹ = 212211222109609 is a prime.

It is a super-2 number, since 2×212211222110121² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (212211222110131) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 233699851 + ... + 234606143.

It is an arithmetic number, because the mean of its divisors is an integer number (9564619043700).

Almost surely, 2^{212211222110121} is an apocalyptic number.

It is an amenable number.

212211222110121 is a deficient number, since it is larger than the sum of its proper divisors (93856587288279).

212211222110121 is a wasteful number, since it uses less digits than its factorization.

212211222110121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 932985.

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

Adding to 212211222110121 its reverse (121011222112212), we get a palindrome (333222444222333).

The spelling of 212211222110121 in words is "two hundred twelve trillion, two hundred eleven billion, two hundred twenty-two million, one hundred ten thousand, one hundred twenty-one".