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11213210201 = 31981350621
BaseRepresentation
bin10100111000101110…
…00000001001011001
31001221110122002122112
422130113000021121
5140431040211301
65052402002105
7544605466634
oct123427001131
931843562575
1011213210201
114834623876
12220b346335
13109915872b
14785330c1b
154596579bb
hex29c5c0259

11213210201 has 4 divisors (see below), whose sum is σ = 11213592804. Its totient is φ = 11212827600.

The previous prime is 11213210189. The next prime is 11213210219. The reversal of 11213210201 is 10201231211.

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 5369372176 + 5843838025 = 73276^2 + 76445^2 .

It is a cyclic number.

It is not a de Polignac number, because 11213210201 - 218 = 11212948057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11213210231) 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, 143330 + ... + 207291.

It is an arithmetic number, because the mean of its divisors is an integer number (2803398201).

Almost surely, 211213210201 is an apocalyptic number.

It is an amenable number.

11213210201 is a deficient number, since it is larger than the sum of its proper divisors (382603).

11213210201 is an equidigital number, since it uses as much as digits as its factorization.

11213210201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 382602.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 11213210201 its reverse (10201231211), we get a palindrome (21414441412).

The spelling of 11213210201 in words is "eleven billion, two hundred thirteen million, two hundred ten thousand, two hundred one".

Divisors: 1 31981 350621 11213210201