2221100120001 has 32 divisors (see below), whose sum is σ = 3481623669760. Its totient is φ = 1232902109376.

The previous prime is 2221100119969. The next prime is 2221100120011. The reversal of 2221100120001 is 1000210011222.

It is not a de Polignac number, because 2221100120001 - 2⁵ = 2221100119969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2221100120011) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1828051 + ... + 2789976.

It is an arithmetic number, because the mean of its divisors is an integer number (108800739680).

Almost surely, 2^{2221100120001} is an apocalyptic number.

2221100120001 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2221100120001 is a deficient number, since it is larger than the sum of its proper divisors (1260523549759).

2221100120001 is a wasteful number, since it uses less digits than its factorization.

2221100120001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4618693.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 2221100120001 its reverse (1000210011222), we get a palindrome (3221310131223).

The spelling of 2221100120001 in words is "two trillion, two hundred twenty-one billion, one hundred million, one hundred twenty thousand, one".