221020201101 has 12 divisors (see below), whose sum is σ = 342806842752. Its totient is φ = 126297257688.

The previous prime is 221020201067. The next prime is 221020201139. The reversal of 221020201101 is 101102020122.

221020201101 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 221020201101 - 2⁶ = 221020201037 is a prime.

It is a super-2 number, since 2×221020201101² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221020201301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 751769245 + ... + 751769538.

It is an arithmetic number, because the mean of its divisors is an integer number (28567236896).

Almost surely, 2^221020201101 is an apocalyptic number.

221020201101 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

221020201101 is a deficient number, since it is larger than the sum of its proper divisors (121786641651).

221020201101 is a wasteful number, since it uses less digits than its factorization.

221020201101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1503538800 (or 1503538793 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 221020201101 its reverse (101102020122), we get a palindrome (322122221223).

The spelling of 221020201101 in words is "two hundred twenty-one billion, twenty million, two hundred one thousand, one hundred one".