221102110112101 has 4 divisors (see below), whose sum is σ = 224216224339104. Its totient is φ = 217987995885100.

The previous prime is 221102110112071. The next prime is 221102110112131. The reversal of 221102110112101 is 101211011201122.

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 an interprime number because it is at equal distance from previous prime (221102110112071) and next prime (221102110112131).

It is a cyclic number.

It is not a de Polignac number, because 221102110112101 - 2⁵ = 221102110112069 is a prime.

It is a super-2 number, since 2×221102110112101² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221102110112131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1557057113395 + ... + 1557057113536.

It is an arithmetic number, because the mean of its divisors is an integer number (56054056084776).

Almost surely, 2^{221102110112101} is an apocalyptic number.

It is an amenable number.

221102110112101 is a deficient number, since it is larger than the sum of its proper divisors (3114114227003).

221102110112101 is an equidigital number, since it uses as much as digits as its factorization.

221102110112101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3114114227002.

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

Adding to 221102110112101 its reverse (101211011201122), we get a palindrome (322313121313223).

The spelling of 221102110112101 in words is "two hundred twenty-one trillion, one hundred two billion, one hundred ten million, one hundred twelve thousand, one hundred one".