2212201021121 has 16 divisors (see below), whose sum is σ = 2760006340224. Its totient is φ = 1726336001664.

The previous prime is 2212201021111. The next prime is 2212201021169. The reversal of 2212201021121 is 1211201022122.

It is a cyclic number.

It is not a de Polignac number, because 2212201021121 - 2¹⁴ = 2212201004737 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2212201021121.

It is not an unprimeable number, because it can be changed into a prime (2212201021111) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 166499531 + ... + 166512816.

It is an arithmetic number, because the mean of its divisors is an integer number (172500396264).

Almost surely, 2^{2212201021121} is an apocalyptic number.

It is an amenable number.

2212201021121 is a deficient number, since it is larger than the sum of its proper divisors (547805319103).

2212201021121 is a wasteful number, since it uses less digits than its factorization.

2212201021121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333012440.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 2212201021121 its reverse (1211201022122), we get a palindrome (3423402043243).

The spelling of 2212201021121 in words is "two trillion, two hundred twelve billion, two hundred one million, twenty-one thousand, one hundred twenty-one".