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BaseRepresentation
bin11110100011111101110…
…011001101110111001101
321102202222200210001100020
4132203331303031313031
5233402203214232341
64244453003452353
7304506652214616
oct36437563156715
97382880701306
102100202102221
1173a766375313
1229b0495270b9
13123081bb5c12
14739166bcc0d
153996ed39566
hex1e8fdccddcd

2100202102221 has 4 divisors (see below), whose sum is σ = 2800269469632. Its totient is φ = 1400134734812.

The previous prime is 2100202102213. The next prime is 2100202102247. The reversal of 2100202102221 is 1222012020012.

Adding to 2100202102221 its reverse (1222012020012), we get a palindrome (3322214122233).

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 a cyclic number.

It is not a de Polignac number, because 2100202102221 - 23 = 2100202102213 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2100202102221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2100202302221) 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, 350033683701 + ... + 350033683706.

It is an arithmetic number, because the mean of its divisors is an integer number (700067367408).

Almost surely, 22100202102221 is an apocalyptic number.

It is an amenable number.

2100202102221 is a deficient number, since it is larger than the sum of its proper divisors (700067367411).

2100202102221 is an equidigital number, since it uses as much as digits as its factorization.

2100202102221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 700067367410.

The product of its (nonzero) digits is 64, while the sum is 15.

The spelling of 2100202102221 in words is "two trillion, one hundred billion, two hundred two million, one hundred two thousand, two hundred twenty-one".

Divisors: 1 3 700067367407 2100202102221