2221100100121 has 8 divisors (see below), whose sum is σ = 2576286683840. Its totient is φ = 1875385158768.

The previous prime is 2221100100113. The next prime is 2221100100161. The reversal of 2221100100121 is 1210010011222.

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

It is a cyclic number.

It is not a de Polignac number, because 2221100100121 - 2³ = 2221100100113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2221100100101) 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, 2367910086 + ... + 2367911023.

It is an arithmetic number, because the mean of its divisors is an integer number (322035835480).

Almost surely, 2^{2221100100121} is an apocalyptic number.

It is an amenable number.

2221100100121 is a deficient number, since it is larger than the sum of its proper divisors (355186583719).

2221100100121 is an equidigital number, since it uses as much as digits as its factorization.

2221100100121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4735821183.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 2221100100121 its reverse (1210010011222), we get a palindrome (3431110111343).

The spelling of 2221100100121 in words is "two trillion, two hundred twenty-one billion, one hundred million, one hundred thousand, one hundred twenty-one".