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202100222101 = 997320264737
BaseRepresentation
bin1011110000111000011…
…1001010100010010101
3201022122201020000121011
42330032013022202111
511302400124101401
6232502113052221
720413142354341
oct2741607124225
9638581200534
10202100222101
117878a341148
1233202b57071
131609a48714b
149ad2dc8621
1553cca32451
hex2f0e1ca895

202100222101 has 4 divisors (see below), whose sum is σ = 202120496812. Its totient is φ = 202079947392.

The previous prime is 202100222099. The next prime is 202100222113. The reversal of 202100222101 is 101222001202.

Adding to 202100222101 its reverse (101222001202), we get a palindrome (303322223303).

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 60818958225 + 141281263876 = 246615^2 + 375874^2 .

It is a cyclic number.

It is not a de Polignac number, because 202100222101 - 21 = 202100222099 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202100222501) 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, 10122396 + ... + 10142341.

It is an arithmetic number, because the mean of its divisors is an integer number (50530124203).

Almost surely, 2202100222101 is an apocalyptic number.

It is an amenable number.

202100222101 is a deficient number, since it is larger than the sum of its proper divisors (20274711).

202100222101 is an equidigital number, since it uses as much as digits as its factorization.

202100222101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20274710.

The product of its (nonzero) digits is 32, while the sum is 13.

The spelling of 202100222101 in words is "two hundred two billion, one hundred million, two hundred twenty-two thousand, one hundred one".

Divisors: 1 9973 20264737 202100222101