2221102121 has 8 divisors (see below), whose sum is σ = 2538935040. Its totient is φ = 1903402368.

The previous prime is 2221102099. The next prime is 2221102127. The reversal of 2221102121 is 1212011222.

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

It is not a de Polignac number, because 2221102121 - 2³⁰ = 1147360297 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2221102096 and 2221102105.

It is not an unprimeable number, because it can be changed into a prime (2221102127) 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, 5465 + ... + 66873.

It is an arithmetic number, because the mean of its divisors is an integer number (317366880).

Almost surely, 2^2221102121 is an apocalyptic number.

It is an amenable number.

2221102121 is a deficient number, since it is larger than the sum of its proper divisors (317832919).

2221102121 is an equidigital number, since it uses as much as digits as its factorization.

2221102121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66583.

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

The square root of 2221102121 is about 47128.5701141038. The cubic root of 2221102121 is about 1304.7365911401.

Adding to 2221102121 its reverse (1212011222), we get a palindrome (3433113343).

The spelling of 2221102121 in words is "two billion, two hundred twenty-one million, one hundred two thousand, one hundred twenty-one".