2212210121 has 16 divisors (see below), whose sum is σ = 2482083648.
Its totient is φ = 1954276800.
The previous prime is 2212210111. The next prime is 2212210123. The reversal of 2212210121 is 1210122122.
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-2212210121 is a prime.
It is a junction number, because it is equal to n+sod(n) for n = 2212210096 and 2212210105.
It is not an unprimeable number, because it can be changed into a prime (2212210123) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (17) of ones.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 81311 + ... + 105051.
It is an arithmetic number, because the mean of its divisors is an integer number (155130228).
Almost surely, 22212210121 is an apocalyptic number.
It is an amenable number.
2212210121 is a deficient number, since it is larger than the sum of its proper divisors (269873527).
2212210121 is a wasteful number, since it uses less digits than its factorization.
2212210121 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 23992.
The product of its (nonzero) digits is 32, while the sum is 14.
The square root of 2212210121 is about 47034.1378256262.
The cubic root of 2212210121 is about 1302.9931271844.
Adding to 2212210121 its reverse (1210122122), we get a palindrome (3422332243).
It can be divided in two parts, 22122101 and 21, that added together give a palindrome (22122122).
The spelling of 2212210121 in words is "two billion, two hundred twelve million, two hundred ten thousand, one hundred twenty-one".