221011122010101 has 8 divisors (see below), whose sum is σ = 294682745496864. Its totient is φ = 147340123265040.

The previous prime is 221011122010033. The next prime is 221011122010123. The reversal of 221011122010101 is 101010221110122.

It is a happy number.

221011122010101 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 221011122010101 - 2²⁹ = 221010585139189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221011122010141) 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, 155359351 + ... + 156775476.

It is an arithmetic number, because the mean of its divisors is an integer number (36835343187108).

Almost surely, 2^{221011122010101} is an apocalyptic number.

It is an amenable number.

221011122010101 is a deficient number, since it is larger than the sum of its proper divisors (73671623486763).

221011122010101 is a wasteful number, since it uses less digits than its factorization.

221011122010101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312370851.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 221011122010101 its reverse (101010221110122), we get a palindrome (322021343120223).

The spelling of 221011122010101 in words is "two hundred twenty-one trillion, eleven billion, one hundred twenty-two million, ten thousand, one hundred one".