221111201012101 has 32 divisors (see below), whose sum is σ = 235694875742208. Its totient is φ = 206998434350400.

The previous prime is 221111201012033. The next prime is 221111201012111. The reversal of 221111201012101 is 101210102111122.

221111201012101 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221111201012101 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 (221111201012111) 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, 114123090 + ... + 116044396.

It is an arithmetic number, because the mean of its divisors is an integer number (7365464866944).

Almost surely, 2^{221111201012101} is an apocalyptic number.

It is an amenable number.

221111201012101 is a deficient number, since it is larger than the sum of its proper divisors (14583674730107).

221111201012101 is a wasteful number, since it uses less digits than its factorization.

221111201012101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1922001.

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

Adding to 221111201012101 its reverse (101210102111122), we get a palindrome (322321303123223).

The spelling of 221111201012101 in words is "two hundred twenty-one trillion, one hundred eleven billion, two hundred one million, twelve thousand, one hundred one".