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11230210221 = 34779646881
BaseRepresentation
bin10100111010101111…
…10110100010101101
31001222122121210021220
422131113312202231
5140444413211341
65054210213553
7545203132446
oct123527664255
931878553256
1011230210221
11484318517a
122214b842b9
13109c82b509
147876b82cd
1545adb4a66
hex29d5f68ad

11230210221 has 8 divisors (see below), whose sum is σ = 15292201344. Its totient is φ = 7327512960.

The previous prime is 11230210219. The next prime is 11230210259. The reversal of 11230210221 is 12201203211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11230210221 - 21 = 11230210219 is a prime.

It is a super-2 number, since 2×112302102212 (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11230210221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11230210261) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39823300 + ... + 39823581.

It is an arithmetic number, because the mean of its divisors is an integer number (1911525168).

Almost surely, 211230210221 is an apocalyptic number.

It is an amenable number.

11230210221 is a deficient number, since it is larger than the sum of its proper divisors (4061991123).

11230210221 is an equidigital number, since it uses as much as digits as its factorization.

11230210221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79646931.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 11230210221 its reverse (12201203211), we get a palindrome (23431413432).

The spelling of 11230210221 in words is "eleven billion, two hundred thirty million, two hundred ten thousand, two hundred twenty-one".

Divisors: 1 3 47 141 79646881 238940643 3743403407 11230210221