2221010112121 has 4 divisors (see below), whose sum is σ = 2337905381200. Its totient is φ = 2104114843044.

The previous prime is 2221010112119. The next prime is 2221010112131. The reversal of 2221010112121 is 1212110101222.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 2221010112121 - 2¹ = 2221010112119 is a prime.

It is a super-2 number, since 2×2221010112121² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2221010112095 and 2221010112104.

It is not an unprimeable number, because it can be changed into a prime (2221010112131) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 58447634511 + ... + 58447634548.

It is an arithmetic number, because the mean of its divisors is an integer number (584476345300).

Almost surely, 2^{2221010112121} is an apocalyptic number.

It is an amenable number.

2221010112121 is a deficient number, since it is larger than the sum of its proper divisors (116895269079).

2221010112121 is a wasteful number, since it uses less digits than its factorization.

2221010112121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116895269078.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 2221010112121 its reverse (1212110101222), we get a palindrome (3433120213343).

It can be divided in two parts, 22210101 and 12121, that added together give a palindrome (22222222).

The spelling of 2221010112121 in words is "two trillion, two hundred twenty-one billion, ten million, one hundred twelve thousand, one hundred twenty-one".