202011100221 has 32 divisors (see below), whose sum is σ = 308304599040. Its totient is φ = 115255774656.

The previous prime is 202011100217. The next prime is 202011100223. The reversal of 202011100221 is 122001110202.

202011100221 is nontrivially palindromic in base 2.

It is not a de Polignac number, because 202011100221 - 2² = 202011100217 is a prime.

It is a super-2 number, since 2×202011100221² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 202011100197 and 202011100206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202011100223) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 51570955 + ... + 51574871.

It is an arithmetic number, because the mean of its divisors is an integer number (9634518720).

Almost surely, 2^202011100221 is an apocalyptic number.

202011100221 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

202011100221 is a deficient number, since it is larger than the sum of its proper divisors (106293498819).

202011100221 is a wasteful number, since it uses less digits than its factorization.

202011100221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7113.

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

Adding to 202011100221 its reverse (122001110202), we get a palindrome (324012210423).

The spelling of 202011100221 in words is "two hundred two billion, eleven million, one hundred thousand, two hundred twenty-one".