221011111102101 has 16 divisors (see below), whose sum is σ = 296119237017600. Its totient is φ = 146623576617008.

The previous prime is 221011111102081. The next prime is 221011111102127. The reversal of 221011111102101 is 101201111110122.

It is a cyclic number.

It is not a de Polignac number, because 221011111102101 - 2⁵ = 221011111102069 is a prime.

It is a super-2 number, since 2×221011111102101² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221011111102801) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 213690741 + ... + 214722506.

It is an arithmetic number, because the mean of its divisors is an integer number (18507452313600).

Almost surely, 2^{221011111102101} is an apocalyptic number.

It is an amenable number.

221011111102101 is a deficient number, since it is larger than the sum of its proper divisors (75108125915499).

221011111102101 is a wasteful number, since it uses less digits than its factorization.

221011111102101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 428414088.

The product of its (nonzero) digits is 8, while the sum is 15.

Adding to 221011111102101 its reverse (101201111110122), we get a palindrome (322212222212223).

The spelling of 221011111102101 in words is "two hundred twenty-one trillion, eleven billion, one hundred eleven million, one hundred two thousand, one hundred one".