2221210112101 has 4 divisors (see below), whose sum is σ = 2221521693100. Its totient is φ = 2220898531104.

The previous prime is 2221210112081. The next prime is 2221210112119. The reversal of 2221210112101 is 1012110121222.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1932728331076 + 288481781025 = 1390226^2 + 537105^2 .

It is a cyclic number.

It is not a de Polignac number, because 2221210112101 - 2¹⁹ = 2221209587813 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2221210112801) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 155779806 + ... + 155794063.

It is an arithmetic number, because the mean of its divisors is an integer number (555380423275).

Almost surely, 2^{2221210112101} is an apocalyptic number.

It is an amenable number.

2221210112101 is a deficient number, since it is larger than the sum of its proper divisors (311580999).

2221210112101 is an equidigital number, since it uses as much as digits as its factorization.

2221210112101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 311580998.

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

Adding to 2221210112101 its reverse (1012110121222), we get a palindrome (3233320233323).

The spelling of 2221210112101 in words is "two trillion, two hundred twenty-one billion, two hundred ten million, one hundred twelve thousand, one hundred one".