221011110022101 has 16 divisors (see below), whose sum is σ = 337778178052224. Its totient is φ = 125917308969984.

The previous prime is 221011110022069. The next prime is 221011110022103. The reversal of 221011110022101 is 101220011110122.

It is a happy number.

It is not a de Polignac number, because 221011110022101 - 2⁵ = 221011110022069 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221011110022103) 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, 15614738580 + ... + 15614752733.

It is an arithmetic number, because the mean of its divisors is an integer number (21111136128264).

Almost surely, 2^{221011110022101} is an apocalyptic number.

221011110022101 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

221011110022101 is a deficient number, since it is larger than the sum of its proper divisors (116767068030123).

221011110022101 is a wasteful number, since it uses less digits than its factorization.

221011110022101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31229491660.

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

Adding to 221011110022101 its reverse (101220011110122), we get a palindrome (322231121132223).

The spelling of 221011110022101 in words is "two hundred twenty-one trillion, eleven billion, one hundred ten million, twenty-two thousand, one hundred one".