2212120121 has 8 divisors (see below), whose sum is σ = 2349879840. Its totient is φ = 2075208768.

The previous prime is 2212120111. The next prime is 2212120123. The reversal of 2212120121 is 1210212122.

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

It is not a de Polignac number, because 2212120121 - 2¹⁴ = 2212103737 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2212120096 and 2212120105.

It is not an unprimeable number, because it can be changed into a prime (2212120123) 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, 206711 + ... + 217148.

It is an arithmetic number, because the mean of its divisors is an integer number (293734980).

Almost surely, 2^2212120121 is an apocalyptic number.

It is an amenable number.

2212120121 is a deficient number, since it is larger than the sum of its proper divisors (137759719).

2212120121 is a wasteful number, since it uses less digits than its factorization.

2212120121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 424183.

The product of its (nonzero) digits is 32, while the sum is 14.

The square root of 2212120121 is about 47033.1810640105. The cubic root of 2212120121 is about 1302.9754569262.

Adding to 2212120121 its reverse (1210212122), we get a palindrome (3422332243).

The spelling of 2212120121 in words is "two billion, two hundred twelve million, one hundred twenty thousand, one hundred twenty-one".