2221100212001 has 4 divisors (see below), whose sum is σ = 2423018413104. Its totient is φ = 2019182010900.

The previous prime is 2221100211937. The next prime is 2221100212099. The reversal of 2221100212001 is 1002120011222.

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 a cyclic number.

It is not a de Polignac number, because 2221100212001 - 2⁶ = 2221100211937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2221102212001) 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, 100959100535 + ... + 100959100556.

It is an arithmetic number, because the mean of its divisors is an integer number (605754603276).

Almost surely, 2^{2221100212001} is an apocalyptic number.

It is an amenable number.

2221100212001 is a deficient number, since it is larger than the sum of its proper divisors (201918201103).

2221100212001 is a wasteful number, since it uses less digits than its factorization.

2221100212001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201918201102.

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

Adding to 2221100212001 its reverse (1002120011222), we get a palindrome (3223220223223).

The spelling of 2221100212001 in words is "two trillion, two hundred twenty-one billion, one hundred million, two hundred twelve thousand, one".